Ophthalmic optical lens for vision correction having one or more regions of more positive power

Abstract

To provide an ophthalmic lens that provides a wearer with appropriate or improved visual function or vision function, and has an additional relatively positive power in an optical zone compared to a long-distance power.SOLUTION: Provided are: a lens whose function may be improved by providing one or more steps 106 in a central portion 111 of an optical zone and one or more steps 107 in a peripheral portion 110 of the optical zone; a method for manufacturing and designing a lens; and / or a method using a lens, useful for correcting refractive errors of eyes and / or controlling eye growth.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] cross reference Australian Provisional Patent Application No. 2012905371, filed December 10, 2012, entitled "Optical Lens for Vision Correction Having One or More Areas of More Positive Power", is hereby incorporated by reference in its entirety. U.S. Provisional Patent Application No. 61 / 889,189, filed October 10, 2013, entitled "Ophthalmic Optical Lens for Vision Correction Having One or More Areas of More Positive Power", is also hereby incorporated by reference in its entirety.

[0002] The present disclosure relates to ophthalmic optical lenses that are designed to correct the refractive error of the eye and / or to control the growth of the eye and / or that additionally have one or more areas of more positive power, and methods of using such ophthalmic optical lens designs. The present disclosure also relates to ophthalmic optical lenses that are designed to correct the refractive error of the eye and that have one or more areas of more positive power. While certain embodiments may be applied to or embodied as contact lenses, intraocular lenses, corneal onlays and inlays, for example, and / or may be applied or used to at least reduce refractive errors of the eye, such as myopia, hyperopia, astigmatism, and presbyopia, in the context of contact lenses, there is a particular interest in providing contact lenses that are specifically designed for the correction of myopia and / or the control of the progression of myopia. Certain embodiments may be applied to or embodied as, for example, contact lenses, intraocular lenses, corneal onlays and inlays, and / or may be applied to the eye, particularly optically coupled, for the correction of presbyopia. In some embodiments, the present disclosure may be applied to or embodied as bifocal and / or multifocal contact lenses. [Background technology]

[0003] A basic bifocal or multifocal ophthalmic lens, such as an intraocular lens, corneal onlay, corneal inlay, or contact lens, has a central region of an optical zone with an optical power providing distance vision and an annular region around the central region with a power providing near vision (i.e., a central distance bifocal or multifocal lens). Another basic bifocal or multifocal ophthalmic lens has a central region of an optical zone with an optical power providing near vision and an annular region around the central region with a power providing distance vision (i.e., a central near bifocal or multifocal lens). The optical zone of the contact lens may be approximately equal to the size of the pupil. The diameter of the pupil may vary from 3 mm to 8 mm, so the size of the optical zone of the contact lens may be selected accordingly. Certain contact lenses designed to control the progression of myopia or correct presbyopia rely on the use of a relatively positive optical power in at least one region of the optical zone, the distance power being defined, for example, as the power of the lens required to provide the eye with the appropriate refractive correction when the eye is viewing a distant visual object. This relatively more positive power area or areas may be located at the center or at the periphery of the optical zone, or both, the periphery being, for example, a zone of the contact lens located at a greater distance from the optical axis than the central zone and / or a region having an optical power that provides distance vision.

[0004] The presence of additional relatively positive power in the optical zone of a contact lens is often reported by the wearer as causing effects that reduce visual function or visual performance. Such effects include subjective symptoms such as double vision, ghosting, seeing through a fishbowl (i.e., distortion), and / or possibly reduced high and low contrast visual acuity. Reduced low contrast visual acuity may also be reported as reduced contrast. Reduced contrast may be identified and / or measured as a loss of contrast sensitivity.

[0005] It is an object of the present disclosure to provide an ophthalmic lens that provides a suitable or improved visual function or visual performance for the wearer in one or more aspects of the visual function or visual performance. It is also an object of the present disclosure to provide an ophthalmic lens that provides a suitable or improved visual function or visual performance for the wearer and additionally has a relatively positive power in the optical zone compared to the distance power. It is also an object of the present disclosure to provide an ophthalmic lens that corrects the refractive error of the eye and has one or more areas of relatively positive power in the optical zone. Another object of the present disclosure is to provide an ophthalmic lens that corrects the refractive error of the eye and has one or more areas of relatively positive power in the optical zone compared to the distance power, providing a suitable or improved visual function or visual performance in one or more aspects of the visual function. Combinations of one or more of these objects are also contemplated. It is also an object of the present disclosure to provide a method of using such a lens. Adequate or improved visual function or visual performance may be one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision.

[0006] Prior art lenses and methods suffer from the drawback that visual or visual function is affected by the addition of positive power through the optic zone. The present disclosure is directed to overcoming and / or ameliorating at least one of the drawbacks of the prior art by providing a more positive power in the optic zone through the use of a step in one or more regions of the optic zone, as will be apparent from the description herein. This results in a lens that can be used to both correct myopia and / or control the progression of myopia. This also results in a lens that can be used to correct refractive errors of the eye, such as myopia, hyperopia, astigmatism, and / or presbyopia, without substantially affecting one or more aspects of the visual or visual function, e.g., without substantially changing ghosting. This also results in a lens that can be used to correct refractive errors of the eye, such as myopia, hyperopia, astigmatism, and / or presbyopia, without substantially affecting one or more aspects of the visual or visual function, e.g., without substantially changing ghosting. This also results in a lens that can be used to correct refractive errors of the eye and control eye growth with adequate or improved visual or visual function. Thus, methods of design, use, and lenses that solve these and other problems as disclosed herein are desired. The present disclosure is directed to overcoming and / or ameliorating at least one of the drawbacks of the prior art, as will be apparent from the description herein.

[0007] Any reference to prior art in the specification is not intended to be, or should be taken as, a form of admission or suggestion that that prior art forms part of the common general knowledge in Australia or any other jurisdiction, or that that prior art could reasonably be expected to be identified, understood and recognised as relevant by a person skilled in the art. Summary of the Invention

[0008] It has been found that by providing one or more steps, two or more steps, or three or more steps in the optical power transition between areas of the optical zone having a more negative optical power and a more positive optical power, one or more aspects of visual function or visual function can be improved. It has also been found that the use of a power profile with a step function leads to the favorable effect of suppressing distracting images and improving one or more aspects of visual function or visual function. The adequate or improved visual function or visual function may be one or more of the following: visual clarity, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision. Visual clarity can be assessed, for example, using a clinical questionnaire quantified by a 1-10 numerical rating scale, where 1 = very good clarity and 10 = very poor clarity of vision. The degree of diplopia can be assessed, for example, using a clinical questionnaire quantified by a 1-10 numerical rating scale, where 1 = no observable diplopia of visual image and 10 = very pronounced diplopia of visual image. The extent of ghosting can be assessed, for example, using a clinical questionnaire quantified by a 1-10 numerical rating scale, where 1 = no observable ghosting associated with the visual image and 10 = very noticeable ghosting associated with the visual image. Distortion can be assessed, for example, using a clinical questionnaire quantified by a 1-10 numerical rating scale, where 1 = no observable distortion of the visual image and 10 = severe distortion of the visual image. Contrast can be assessed, for example, using a clinical questionnaire quantified by a 1-10 numerical rating scale, where 1 = very poor contrast in the visual image and 10 = very good contrast in the visual image. Contrast sensitivity can be measured, for example, using a contrast sensitivity test chart, such as a letter-based contrast sensitivity chart (e.g., a Pelli-Robson chart) or a sine-wave grating-based contrast sensitivity chart (e.g., a Functional Acuity Contrast Test or FACT chart).Visual acuity can be measured using, for example, a visual acuity test chart, such as a Snellen chart or a Bailey-Lovie chart (where the test may be applied under high or low light and / or the chart may be high, medium or low contrast). Overall quality of vision can be assessed using, for example, a clinical questionnaire quantified by a 1-10 numeric rating scale, with 1=excellent overall quality of vision and 10=very poor overall quality of vision.

[0009] In certain embodiments, one or more aspects of visual function or visual performance may be influenced or improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In certain embodiments, one or more aspects of visual function or visual performance may be influenced or improved by providing two or more steps in the central portion of the optical zone and two or more steps in the peripheral portion of the optic zone. In certain embodiments, one or more aspects of visual function or visual performance may be influenced or improved by providing two or more steps in the central portion of the optical zone and three or more steps in the peripheral portion of the optic zone. In certain embodiments, one or more aspects of visual function or visual performance may be influenced or improved by providing three or more steps in the central portion of the optical zone and three or more steps in the peripheral portion of the optic zone. In some embodiments, such lens designs may be useful for correcting refractive errors of the eye and / or for controlling eye growth. In some embodiments, such lens designs may be useful for correcting myopia and controlling the progression of myopia. In some embodiments, such lens designs may be useful for correcting presbyopia. Presbyopia is the progressive loss of the eye's ability to accommodate with age, resulting in blurred vision for nearby objects, and is said to be caused, at least in part, by sclerosis of the eye's lens.

[0010] Certain embodiments of the present disclosure provide an ophthalmic optical lens for correcting refractive errors of the eye and controlling eye growth, comprising an optical zone with a primary region having an optical power and one or more secondary regions, at least one of which is around the primary region and has a more positive optical power compared to the optical power of the primary region, the ophthalmic lens having a gradual transition in optical power between more negative and more positive powers, with at least one step, at least two steps, or at least three steps between the primary region and the one or more secondary regions, where the magnitude (i.e., ignoring sign or direction) of the rate of change of power between the primary region and the one or more secondary regions substantially decreases and then increases by an amount and distance sufficient to provide adequate or improved visual or viewing performance in one or more aspects of visual or viewing performance. The adequate or improved visual or viewing performance experienced by the lens may be one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision. Visual clarity can be assessed using a clinical questionnaire quantified by a 1-10 numerical rating scale, e.g., 1=very good clarity and 10=very poor visual clarity. The degree of diplopia can be assessed using a clinical questionnaire quantified by a 1-10 numerical rating scale, e.g., 1=no observable diplopia of the visual image and 10=very pronounced diplopia of the visual image. The degree of ghosting can be assessed using a clinical questionnaire quantified by a 1-10 numerical rating scale, e.g., 1=no observable ghosting associated with the visual image and 10=very pronounced ghosting associated with the visual image. Distortion can be assessed using a clinical questionnaire quantified by a 1-10 numerical rating scale, e.g., 1=no observable distortion of the visual image and 10=severe distortion of the visual image. Contrast can be assessed using a clinical questionnaire quantified by a 1-10 numerical rating scale, e.g., 1=very poor contrast in the visual image and 10=very good contrast in the visual image.Contrast sensitivity can be measured using contrast sensitivity test charts, such as, for example, letter-based contrast sensitivity charts (e.g., Pelli-Robson charts) or sine-grating-based contrast sensitivity charts (e.g., Functional Acuity Contrast Test or FACT charts). Visual acuity can be measured using visual acuity test charts, such as, for example, Snellen charts or Bailey-Lovie charts (where the test may be applied under high or low light and / or the chart may be high contrast, medium contrast, or low contrast). Overall quality of vision can be assessed using clinical questionnaires, quantified, for example, by a 1-10 numeric rating scale, with 1=very good overall quality of vision and 10=very poor overall quality of vision.

[0011] The ophthalmic lens or ophthalmic system may be one or more of the following: a contact lens, an intraocular lens which may be an anterior chamber intraocular lens or a posterior chamber intraocular lens, a corneal onlay, and a corneal inlay.

[0012] In certain embodiments, the optical power of the primary region is selected to correct myopia and has a distance power. In one or more embodiments, the secondary regions are positioned and their powers are selected to control the progression of myopia. Myopia develops due to continued growth of the eye along the optical axis, resulting in a focal spot in front of the retina.

[0013] In one or more embodiments, the optical power of the primary region is selected to provide distance, intermediate, or near vision correction to the eye, and the secondary region has a more positive power compared to the primary region.

[0014] In some embodiments, the gradual transition of optical power is continuous in that it does not have discontinuities in at least magnitude, but also avoids discontinuities in the rate of change of power with respect to distance across the lens (i.e., first derivative). In some embodiments, the gradual transition of optical power is continuous or substantially continuous. As used herein, adequate or improved visual function or visual performance refers to one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, contrast, contrast sensitivity, visual acuity, and overall quality of vision.

[0015] In one or more embodiments, there are one or more secondary regions at the center and periphery of the optical zone. In certain embodiments, the primary region may be an annulus between the central secondary region and the peripheral secondary region. In these embodiments, there may be at least one step as described above in each of the central and peripheral secondary regions and that does not include the primary and secondary regions. By locating one or more of the secondary regions, for example, at the center of the optical zone, simultaneous correction of different vision defects may be achieved.

[0016] In some embodiments, there are at least two steps in the secondary region located around the primary region. When there are two or more steps, the depth and / or height of the steps may be the same or different. The depth and / or height of the steps may be measured, for example, as the difference between the outer skin of the surface of the lens and the actual surface of the lens. In other embodiments, when there are two or more steps, the depth and / or height of the steps may be one of the following: the same, substantially the same, and different.

[0017] In one or more embodiments, the step may include a point or a finite portion where the rate of change of optical power is zero, i.e., the step is flat. In other embodiments, the rate of change may be reversed in the step. In one or more embodiments, the step may include a point or a finite portion where the rate of change of optical power is zero or substantially zero, i.e., the step is flat or substantially flat. In other embodiments, the rate of change may be reversed in the step.

[0018] In some embodiments, the rate of change of optical power may be similar or the same before and after the step. In other embodiments, it may be different before and after the step. In some embodiments, there may be 1-5, 2-4, 1-3, 2-3, 2-5, or 2-6 radially spaced steps in the power transition between one or more secondary regions and one or more primary regions. In some embodiments, there may be 1-5, 2-4, 1-3, 2-3, 2-5, or 2-6 radially spaced steps in the power transition between the secondary regions. Radial means toward or away from the center of the optical axis. The radial distance may sometimes also be referred to as the half-chord distance. In some embodiments, there may be at least 2, 3, 4, 5, or 6 radially spaced steps in one or more secondary regions or in each secondary region. In some embodiments, there may be at least two or three radially spaced steps in the central portion of the optical portion and at least four or five radially spaced steps in the peripheral portion of the optical portion. In some embodiments, there may be one to two radially spaced steps in the central portion of the optical portion and two to six radially spaced steps in the peripheral portion of the optical portion. In some embodiments, there may be two to three radially spaced steps in the central portion of the optical portion and two to four radially spaced steps in the peripheral portion of the optical portion. In some embodiments, there may be at least two or three radially spaced steps per millimeter of the optical portion of the lens. The use of multiple steps has advantages, for example, proper or improved visual function in one or more aspects of visual function. In certain embodiments, the first power transition and the second power transition have 1 to 5, 2 to 4, 1 to 3, 2 to 3, 2 to 5, or 2 to 6 radially spaced steps.In certain embodiments, at least one of the first power transition and the second power transition has 1-5, 2-4, 1-3, 2-3, 2-5, or 2-6 radially spaced steps between the or each secondary region. These steps may be present in other power transitions. In certain embodiments, there are at least 2, 3, 4, 5, or 6 radially spaced steps between the or each secondary region.

[0019] In general, the optical elements are substantially axially symmetric. In some embodiments, the lens elements may be laterally asymmetric and / or rotationally asymmetric. These different symmetries have different advantages, for example, asymmetric lens elements may partially correct or correct certain asymmetric vision defects or aberrations of the eye.

[0020] The secondary surrounding region may begin at a radius ranging from 0.5 to 3 mm, 1 to 2 mm, or 1 to 1.5 mm.

[0021] In this specification, unless the context requires otherwise, the term "comprise" and variations of this term such as "comprising", "comprises" and "comprised" are not intended to exclude further additional components, integers or steps. The present disclosure will now be further described, by way of example only, with reference to the accompanying drawings, in which: [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a half-chord optical power diagram for an axisymmetric contact lens constituting one embodiment of the present disclosure. [Diagram 2] FIG. 2 is a half-chord optical power diagram for an axisymmetric contact lens constituting one embodiment of the present disclosure. [Diagram 3] FIG. 3 is a half-chord optical power diagram for an axisymmetric contact lens constituting one embodiment of the present disclosure. [Figure 4]FIG. 4 is a half-chord optical power diagram for an axisymmetric contact lens constituting one embodiment of the present disclosure. [Diagram 5] FIG. 5 is a half-chord optical power diagram of an example of a conventional contact lens. [Figure 6] FIG. 6 illustrates one exemplary embodiment of a power profile for an optic zone of a lens. [Figure 7] FIG. 7 illustrates one exemplary embodiment of a power profile for an optic zone of a lens. [Figure 8] FIG. 8 illustrates one exemplary embodiment of a power profile for an optic zone of a lens. [Figure 9] FIG. 9 illustrates one exemplary embodiment of a power profile for an optic zone of a lens. [Figure 10] FIG. 10 illustrates one exemplary embodiment of a power profile for an optic zone of a lens. [Figure 11] FIG. 11 illustrates the magnitude of the rate of change of the power profile of the optic zone of the exemplary embodiment of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present disclosure will now be described in more detail with reference to one or more embodiments, some examples of which are illustrated in the accompanying drawings. The examples and embodiments are provided for illustrative purposes and are not to be taken as limiting the scope of the present disclosure. Furthermore, features illustrated or described as part of one embodiment can be used alone to provide other embodiments, and features illustrated or described as part of one embodiment can be used with one or more other embodiments to provide still further embodiments. The present disclosure includes these variations and embodiments, as well as other variations and / or modifications.

[0024] The subject headings used in the detailed description are included for the reader's convenience of reference and are not to be used to limit the subject matter found throughout this disclosure or the claims. The subject headings are not to be used to interpret the scope or limitations of the claims.

[0025] As used herein, a step may be defined as, for example, a region on a lens where the power changes monotonically over that region, and as a location within that region where the magnitude (i.e., ignoring sign or direction) of the rate of change of power decreases and then increases over that region. The rate of change of power within this location (i.e., within the step) may be zero (i.e., the power is constant along the step) or non-zero (i.e., the power continues to change along the step, but at a smaller rate). Alternatively, a step may be defined as, for example, a location on a lens where the absolute value of the first derivative of the power with respect to distance across the width of the lens decreases and then increases.

[0026] Figures 1-4 are semichord diagrams of radial optical power for the optical zone (4 mm radius) of a contact lens according to some of the disclosed embodiments. In the embodiment of Figures 1 and 2, the primary zone 12 of the contact lens is centrally located and has a -3D myopia correction according to the prescription of the individual for whom the contact lens is intended. The primary zone therefore has a diameter of approximately 2.1-2.2 mm.

[0027] Surrounding this central region is a secondary region 14 where the optical power transitions to a more positive power compared to the power of the central region, resulting in an absolute power of −1.5D for the embodiment of Figure 1 and −0.8D for the embodiment of Figure 2. The power transitions continuously (i.e., there are no discontinuities in magnitude or rate of change) with several steps where the magnitude of the rate of change of power decreases followed by an increase.

[0028] The primary region may have an associated primary optical power and the secondary region may have an associated secondary optical power. A power transition may exist between two adjacent regions. For example, a power transition may be between a primary region and an adjacent secondary region. A power transition is a change in optical power from the optical power of one region to the optical power of an adjacent region. For example, a power transition between a primary region having a primary optical power of -3D and a secondary region having a secondary optical power of +1D may change continuously from -3D near the primary region to +1D near the secondary region.

[0029] In the embodiment of FIG. 1, there are two intermediate steps: the first step is very abrupt and steep before and after the step, and the step itself is substantially flat, i.e., there is no change in power, over a width or depth of about 0.6 mm. Thus, the abrupt change is, for example, a large change in the magnitude of the rate of change of power versus distance across the width of the lens (measured in diopters per square millimeter, or D / mm 2 (expressed as 20D / mm 2 More than 100D / mm is acceptable. 2 The change in power before and after the step can also be expressed as the absolute value of the derivative of the absolute value of the first derivative of the power with respect to the distance from the optical axis of the lens expressed in diopters per square millimeter. An abrupt change may also be called a rapid change. The change in power before and after the step can also be gradual. A gradual change is, for example, when the magnitude of the change in the rate of change of power with respect to the distance across the width of the lens is less than 10 D / mm 2 This means that the change in power before and after the step may be moderate. A moderate change is, for example, between a gradual change and an abrupt or rapid change. A moderate change is, for example, a change in the rate of change in power with respect to the distance in the width direction of the lens of 10 D / mm 2 ~20D / mm 2 This means that it can be.

[0030] In the embodiment of FIG. 1, the second step is also flat, but continues with a less steep increase in optical power over a shorter width or depth of about 0.25 mm before plateauing at a more positive power of −1.5D at a radius of about 2.5 mm.

[0031] In the embodiment of FIG. 2, the first step has a smaller width or depth, the rate of power change is substantially similar before and after the two steps, and there is a third step at −1.5D before the optical power of the secondary region plateaus at −0.3D at a radius of about 3.3 mm.

[0032] The embodiment of Figure 3 differs from the embodiment of Figures 1 and 2 in at least two respects. First, there is a circular secondary region 14A in the center of the optical zone, so that the primary region with the primary optical power of -3D is reduced to an annulus about 0.5 mm wide centered on a radius of 1 mm. This centrally located secondary region 14A has one intermediate step in the power transition on the way from the primary optical power of -3D to the central more positive secondary optical power of -2D. The second difference is that in this case the spacing between the steps is not substantially the same as can be seen in the other embodiments, both in terms of the width or half-chord distance between the steps and in terms of the difference in optical power between the steps in the power transition from the primary region to the surrounding secondary region 14.

[0033] Figure 4 shows an embodiment that combines elements of the profiles of the embodiment of Figures 1 and 3. Here, the primary region has a distance power of about -1D, which is a narrow annular region with a radius of about 1.4 mm.

[0034] First tests were carried out with contact lenses according to FIG. 4 in comparison with conventional contact lenses with similar distance power in the primary zone, but with a gradual, continuous, stepless, monotonically increasing peripheral power of 0.5D. The half-chord power profiles of these reference contact lenses are shown in FIG. 5. Four subjects who presented a minimal cylindrical correction not exceeding 0.75 DC (i.e. requiring minimal astigmatism correction) were selected and questioned to evaluate various elements or aspects of their visual function or visual function for 1 to 4 hours after wearing the lenses. The subjects wore each design symmetrically, and these were tested in the same order. The tasks performed by the subjects in evaluating the lenses were mainly related to indoor office work. The evaluation included questions related to vision, including clarity of vision, degree of ghosting, and overall satisfaction.

[0035] The power profile of the lens may be based on the design of the lens or may be measured from a manufactured lens. Several measurement systems can be used to measure the manufactured lens. Some examples of measurement systems include, but are not limited to, power profiling instruments such as SHSOphthalmic (Optocraft Gmbh, Germany), Nimo (Lambda-X, Belgium), and Phase Focus Lens Profiler (Phase Focus Ltd, UK). When properly configured, these measurement systems can be used to determine the power profile and the number of steps present in the power profile of the lens.

[0036] Vision was assessed on a 1-10 numerical rating scale, with 1=very unclear / blurry and 10=very clear / sharp. For distance and near vision, the conventional reference lens was rated on average about a 6, whereas the exemplary embodiment used was rated about an 8. Overall vision was rated 5 vs. 7.5, respectively. For reporting the degree of ghosting, the scale was 1=no ghosting and 10=severe ghosting. The reference design received a rating of about 4.5 for ghosting at distance and near vision, whereas the embodiment was rated at 2.5 (i.e., less ghosting).

[0037] For overall satisfaction, the scores were 5 vs. 7.5, with the illustrated embodiment having the higher performance score.

[0038] The lens configuration of FIG. 4 provided an observable subjective improvement in visual function or visual performance compared to that of FIG.

[0039] Certain embodiments relate to an ophthalmic lens comprising an optical zone including at least one primary region having at least one primary optical power and at least one secondary region including at least one first optical power, at least one of the secondary regions being periphery of the at least one primary region, the at least one first optical power being more positive than the at least one primary optical power, there being a first power transition from the at least one primary optical power to the at least one first optical power having at least a first step and a second step, the steps not including the at least one primary region and the at least one secondary region, and for at least one of the first step and the second step, the magnitude of the rate of change of the power transition decreases at a boundary point before the step and then increases at a boundary point after the step. EXAMPLES

[0040] Example 1 FIG. 6 illustrates an exemplary embodiment of a power profile for an optic zone of a lens. The power across the optic zone is plotted versus the half-chord distance from the center of the optic zone. The example in FIG. a primary region 101 having a primary optical power; A central portion 111; a first secondary region 102 in the central portion 111 having a first secondary optical power; a first power transition region 104 having a first power transition from the primary region 101 to a first secondary region 102; A peripheral portion 110; a second secondary region 103 within the peripheral portion 110 having a second secondary optical power; a second power transition region 105 having a second power transition from the primary region 101 to a second secondary region 103; 1. An ophthalmic lens comprising an optic zone comprising: the primary optical powers are selected according to a refractive correction prescription, the first secondary optical power being more positive than the primary optical power, and the second secondary optical power being more positive than the primary optical power; The first power transition has at least a rapid change in the rate of change of power from the first secondary optical power in the first secondary region 102 to the primary optical power in the primary region 101 at a first boundary point 113 between a first transition region 112 and a first step 106 in the first power transition 104 (e.g., a magnitude of change in the magnitude of the rate of change of power with respect to distance across the lens of 20 D / mm 2or more), followed by a first step 106 in the first power transition region 104 followed by a rapid change in the rate of change of power at a second boundary point 114 between a second transition region 115 and the first step 106 in the first power transition 104, and a second step 107 in the second power transition region 105 followed by a rapid change in the rate of change of power at least at a third boundary point 118 between a third transition region 119 and the second step 107 of the second power transition 105, followed by a rapid change in the rate of change of power at a fourth boundary point 117 between a fourth transition region 116 and the second step 107 in the second power transition 105. In certain embodiments, the magnitude of the rate of change of power with distance across the lens may be at least 0.5 D / mm, 1 D / mm, 2 D / mm, 4 D / mm, or 8 D / mm.

[0041] In the exemplary embodiment of Figure 6, the optic zone has a diameter of 8 mm (half chord of 4 mm). In other embodiments, the diameter of the optic zone may be at least 3 mm, 5 mm, 6 mm, 7 mm, or 8 mm. In the exemplary embodiment of Figure 6, the primary optical power of the primary region 101 is no power (i.e., 0D).

[0042] In certain embodiments, the primary optical power may be selected according to the wearer's prescription. In certain embodiments, the primary optical power may include a spherical power component. The spherical power component may be used to correct myopia, hyperopia, presbyopia, or a combination thereof. The spherical power in the primary zone may be selected from the ranges of -20D to +30D, -20D to +20D, -15D to +15D, or -10D to +10D. In certain embodiments, the primary optical power may further include a cylindrical power component. The cylindrical power component may be used to correct astigmatism. In certain embodiments, the cylindrical power in the primary zone may be selected from the ranges of -10D to +10D or -5D to +5D.

[0043] 6, the diameter of the first centrally located secondary region is about 0.7 mm (i.e., about 0.35 half-chord distance) and the width (half-chord distance) of the second secondary region is about 1.1 mm. In certain embodiments, the width of the secondary region may be between 0 mm and 2 mm, between 0.1 mm and 1.75 mm, or between 0.2 mm and 1.5 mm.

[0044] In the exemplary embodiment of FIG. 6, the width (half chord distance) of the primary region 101 is about 0.6 mm.

[0045] In certain embodiments, the width of the primary region may be between 0.2 mm and 2 mm, between 0.3 mm and 1.75 mm, or between 0.4 mm and 1.5 mm.

[0046] In the exemplary embodiment of FIG. 6, the power of the first secondary region is 1D more positive than the primary optical power and the second secondary optical power is 2.75D greater than the optical power of the primary region.

[0047] In certain embodiments, the power of the secondary region may be up to 5D, 4D, or 3D more positive than the power of the primary region. In certain embodiments, the powers of two or more secondary regions may be the same, substantially the same, or different.

[0048] In the exemplary embodiment of FIG. 6, the width of the first step 106 is approximately 0.2 mm and the width of the second step 107 is approximately 0.4 mm.

[0049] In certain embodiments, the step width may be between 0 mm and 1.5 mm, between 0.1 mm and 1.25 mm, between 0.1 mm and 1 mm, or between 0.15 mm and 1 mm.

[0050] In the exemplary embodiment of Figure 6, the power of the first step 106 is approximately 0.5D more positive than the optical power of the primary region 101 and the power of the second step 107 is approximately 1.75D greater than the optical power of the primary region 101. In the exemplary embodiment of Figure 6, the power of the first step 106 is approximately 0.5D less positive than the optical power of the first secondary region 102 and the power of the second step 107 is approximately 1D less than the optical power of the second secondary region 103.

[0051] In certain embodiments, the power of a step may be up to 5D, 4D, or 3D more positive than the power of the primary region. In certain embodiments, the power of a step may be up to 5D, 4D, or 3D less positive or more negative than the power of the secondary region. In certain embodiments, the powers of two or more steps may be the same, substantially the same, or different.

[0052] In the exemplary embodiment of FIG. 6, the change in the rate of change of optical power at boundary points 113 and 114 forming the first step 106 and the change in the rate of change of optical power at boundary points 117 and 118 forming the second step 107 are rapid.

[0053] In certain embodiments, a change in the rate of change of optical power may be considered "rapid" if the change in the rate of change occurs over a boundary point width of less than 0.3 mm, 0.25 mm, 0.2 mm, or 0.15 mm. How rapidly the change in the rate of change of optical power can occur may be constrained by the manufacturing process of the lens.

[0054] Example 2 FIG. 10 illustrates an exemplary embodiment of a power profile for an optic zone of a lens. The power across the optic zone is plotted versus the half-chord distance from the center of the optic zone. The example of FIG. a primary region 501 having a primary optical power; A central portion 511; a first secondary region 502 in the central portion 511 having a first secondary optical power; a first power transition region 504 having a first power transition from the primary region 501 to a first secondary region 502; A peripheral portion 510; a second secondary region 503 within the peripheral portion 510 having a second secondary optical power; a second power transition region 505 having a second power transition from the primary region 501 to a second secondary region 503; 1. An ophthalmic lens comprising an optic zone comprising: the primary optical powers are selected according to a refractive correction prescription, the first secondary optical power is more positive than the primary optical power, and the second secondary optical power is more positive than the primary optical power; The first power transition includes at least a first step 506 in a first power transition region 504 where the rate of change of power from the first secondary optical power in the first secondary region 502 to the primary optical power in the primary region 501 changes rapidly at a first boundary point 513 between a first transition region 512 and the first step 506 in the first power transition 504, followed by a rapid change in the rate of change of power at a second boundary point 514 between a second transition region 515 and the first step 506 in the first power transition 504; and a second step 507 in the second power transition region 505, where the rate of change of power from the second secondary optical power in the second secondary region 503 to the primary optical power in the primary region 501 changes rapidly at a third boundary point 518 between a third transition region 519 of the second power transition 505 and the second step 507, followed by a rapid change in the rate of change of power at a fourth transition region 516 in the second power transition 505 and a fourth boundary point 517 between the second step 507.

[0055] Figure 11 is a plot of the magnitude of the rate of power change across the optical zone of the exemplary embodiment shown in Figure 10. The primary region 501, inner and outer portions 511 and 510, secondary regions 502 and 503, power transitions 504 and 505, and first and second steps 506 and 507 of the exemplary embodiment are also shown in Figure 11. The magnitude of the rate of power change is the absolute value of the rate of power change, i.e., the absolute value of the slope of the power along the optic zone. This can be expressed by Equation 1: TIFF2025024091000002.tif16161In formula, X is the semichord distance, P is the degree at the half-chord distance X, R is the magnitude of the rate of change of the degree P over the half-chord distance X, The unit of magnitude of the rate of change in power is D / mm (diopters per millimeter). The unit of the magnitude of the change in the rate of change in power (i.e., the absolute value of the derivative of R with respect to X) is D / mm 2 (diopters per square millimeter). In FIG. 10, the first step 506 has a gradual change in the rate of power change at a first boundary point 513 between the first transition region 512 and the first step 506, and also a gradual change in the rate of power change at a second boundary point 514 between the second transition region 515 and the first step 506. In FIG. 11, the magnitude of the rate of power change approaching the first step 506 from the first secondary region 502 and then leaving the first step towards the primary region 501 is seen as a decrease in the magnitude of the rate of power change at the first transition region 512 and the first boundary point 513, followed by an increase in the magnitude of the rate of power change at the second boundary point 514 and the second transition region 515. In this exemplary embodiment, the change in the magnitude of the rate of power change at boundary points 513 and 514 is gradual, approximately 7 D / mm for the first boundary point 513. 2 and for the second boundary point 514, 9 D / mm 2 It is. In FIG. 10, the second step 507 has a rapid change in the magnitude of the rate of change of power at a fourth boundary point 517 between the fourth transition region 516 and the second step 507, and a more rapid change in the magnitude of the rate of change of power at a third boundary point 518 between the third transition region 519 and the second step 507. In FIG. 11, the magnitude of the rate of change of power approaching the second step 507 from the second secondary region 503 and then leaving the first step towards the primary region 501 is seen as a decrease in the magnitude of the rate of change of power at the third transition region 519 and the third boundary point 518, followed by an increase in the magnitude of the rate of change of power at the fourth boundary point 517 and the fourth transition region 516. In this exemplary embodiment, the magnitude of the change in the magnitude of the rate of change of power at boundary points 517 and 518 ranges from rapid to very rapid, approximately 20 D / mm for the fourth boundary point 517. 2 and for the third boundary point 518, 35 D / mm 2 It is.

[0056] In certain embodiments, the change in magnitude of the rate of change of power at the boundary point may be very rapid, up to 100 D / mm 2 That's fine too.

[0057] Thus, in this exemplary embodiment, for both the first step and the second step, the magnitude of the rate of change of the power decreases and then increases. That is, there is a point or a width where there is a local minimum in the magnitude of the rate of change of the power. In Figure 11, the minimum corresponding to the first step 506 is at point 606, and the minimum corresponding to the second step 507 is along width 607.

[0058] In certain embodiments, the power transition between the secondary region and the primary region has a step where the magnitude of the rate of power change along the power transition decreases followed by an increase. In certain embodiments, the decrease in magnitude of the rate of power change along the power transition followed by an increase can occur one or more times (i.e., the power transition has one or more steps). In certain embodiments, the minimum of the magnitude of the rate of power change along the power transition is one of a point, a substantial point, and a width. In certain embodiments, the minimum of the magnitude of the rate of power change along the power transition has a width of 0-1 mm, 0-0.75 mm, or 0-0.5 mm.

[0059] In certain embodiments, the magnitude of the rate of change of power at the minimum value of the magnitude of the rate of change of power of the step may be 0 D / mm to 0.75 D / mm, 0 D / mm to 0.6 D / mm, or 0 D / mm to 0.5 D / mm, or 0 D / mm to 1 D / mm.

[0060] In certain embodiments, the rate of change in the magnitude of the rate of change in power at the boundary point between the transition region and the step is 1 D / mm 2 ~100D / mm 2 or 5D / mm 2 ~50D / mm 2 That's fine too.

[0061] Example 3 FIG. 7 illustrates an exemplary embodiment of a power profile for an optic zone of a lens. The power across the optic zone is plotted versus the half-chord distance from the center of the optic zone. The example in FIG. a primary region 201 having a primary optical power; A central portion 211; a first secondary region 202 in the central portion 211 having a first secondary optical power; a first power transition region 204 having a first power transition from the primary region 201 to a first secondary region 202; A peripheral portion 210; a second secondary region 203 within the peripheral portion 210 having a second secondary optical power; a second power transition region 205 having a second power transition from the primary region 201 to a second secondary region 203; 1. An ophthalmic lens comprising an optic zone comprising: the primary optical powers are selected according to a refractive correction prescription, the first secondary optical power is more positive than the primary optical power, and the second secondary optical power is more positive than the primary optical power; The first power transition includes at least a first step 206 in a first power transition region 204 where the rate of change of power from the first secondary optical power in the first secondary region 202 to the primary optical power in the primary region 201 changes rapidly at a first boundary point 213 between a first transition region 212 and the first step 206 in the first power transition 204, followed by a rapid change in the rate of change of power at a second boundary point 214 between a second transition region 215 and the first step 206 in the first power transition 204; At least a second step 207 and a third step 208, The second step 207 is located within the second power transition region 205 where the rate of change of power from the second secondary optical power in the second secondary region 203 to the primary optical power in the primary region 201 changes rapidly at a third boundary point 218 between a third transition region 219 within the second power transition 205 and the second step 207, followed by a rapid change in the rate of change of power at a fourth transition point 217 between a fourth transition region 216 within the second power transition 205 and the second step 207. The step 208 relates to an ophthalmic lens located within the second power transition region 205 where the rate of change of power from the second secondary optical power in the second secondary region 203 to the primary optical power in the primary region 201 changes rapidly at a fifth boundary point 221 between the fifth transition region 221 in the second power transition 205 and the third step 208, followed by a rapid change in the rate of change of power at a sixth boundary point 220 between the third transition region 219 in the second power transition 205 and the third step 208.

[0062] In the exemplary embodiment of FIG. 7, the primary optical power of the primary region 201 is 1.25D.

[0063] In certain embodiments, the primary optical power may be selected according to a wearer's prescription, which may be provided for the correction of one or more of myopia, hyperopia, astigmatism, and presbyopia.

[0064] In the exemplary embodiment of FIG. 7, the diameter of the first secondary region is about 0.7 mm (ie, a half-chord distance of about 0.35 mm) and the width (half-chord distance) of the second secondary region is about 0.8 mm.

[0065] In certain embodiments, the width of the secondary region may be between 0 mm and 2 mm, between 0.1 mm and 1.75 mm, or between 0.2 mm and 1.5 mm.

[0066] In the exemplary embodiment of Figure 7, the power of the first secondary region 202 is more positive than the primary optical power by 1D, and the second secondary optical power is more than 3.25D greater than the optical power of the primary region 201. In the exemplary embodiment of Figure 7, the second secondary region 203 has an optical power progression that starts at about 4.25D and gradually increases in positive power toward the outer edge. Such a gradual increase in power at the outer edge may reduce eye growth and / or reduce the progression of myopia.

[0067] In certain embodiments, the power of the secondary region may be constant, substantially constant, gradually increasing, gradually decreasing, modulated (i.e., undulating along its power profile), have an aberration profile (e.g., spherical aberration), or a combination thereof.

[0068] In the exemplary embodiment of FIG. 7 , the inner or central portion 211 has a step 206 at a first power transition 204 from the first secondary region 202 to the primary region 201, and the outer or peripheral portion 210 has two steps 207 and 208 at a second power transition 205 from the second secondary region 203 to the primary region 201.

[0069] In certain embodiments, the number of steps in the inner or central portion, or the outer or peripheral portion, may be 1, 2, 3, 4, or 5 or more. In certain embodiments, the number of steps in the inner portion, meaning for example the central portion, may be 1, 2, 3, or 4 or more. In certain embodiments, the number of steps in the outer portion, meaning for example the portion outside the central or inner portion, may be 1, 2, 3, 4, 5, or 6 or more. In certain embodiments, the number of steps in the inner or central portion, or the outer or peripheral portion, may be 1-6, 1-5, 2-6, 2-5, or 2-4. In certain embodiments, the number of steps in the inner portion may be the same as the number of steps in the outer portion. In certain embodiments, the number of steps in the inner portion and the number of steps in the outer portion may not be the same.

[0070] 7, a first power transition 204 between a first secondary region 202 and a primary region 201 has a step 206, and a second power transition 205 from a second secondary region 203 to the primary region 201 has two steps 207 and 208. In certain embodiments, the number of steps in a power transition may be 1, 2, 3, 4, 5 or more.

[0071] In certain embodiments, the number of steps in a power transition adjacent or bordering a secondary region may be 1, 2, 3, 4, 5, 6 or more. In certain embodiments, the number of steps in a power transition adjacent or bordering a centrally located secondary region may be 1, 2, 3, 4 or more. In certain embodiments, the number of steps in two or more power transitions may be the same. In certain embodiments, the number of steps in two or more power transitions may not be the same.

[0072] Example 4 FIG. 8 illustrates an exemplary embodiment of a power profile for an optic zone of a lens. The example of FIG. a primary region 301 having a primary optical power; A central portion 311; a first secondary region 302 in the central portion 311 having a first secondary optical power; a first power transition region 304 having a first power transition from the primary region 301 to a first secondary region 302; A peripheral portion 310; a second secondary region 303 within the peripheral portion 310 having a second secondary optical power; a second power transition region 305 having a second power transition from the primary region 301 to a second secondary region 303; 1. An ophthalmic lens comprising an optic zone comprising: the primary optical powers are selected according to a refractive correction prescription, the first secondary optical power is more positive than the primary optical power, and the second secondary optical power is more positive than the primary optical power; The first power transition includes at least a first step 306 in a first power transition region 304 where the rate of power change from the first secondary optical power in the first secondary region 302 to the primary optical power in the primary region 301 changes at a first boundary point 313 between a first transition region 312 and the first step 306 in the first power transition 304, followed by a change in the rate of power change at a second boundary point 314 between a second transition region 315 and the first step 306 in the first power transition 304; At least a second step 307 and a third step 308, The second step 307 is located within the second power transition region 305 where the rate of change of power from the second secondary optical power in the second secondary region 303 to the primary optical power in the primary region 301 changes at a third boundary point 318 between a third transition region 319 within the second power transition 305 and the second step 307, followed by a change in the rate of change of power at a fourth boundary point 317 between a fourth transition region 316 within the second power transition 305 and the second step 307. Step 308 relates to an ophthalmic lens located within the second power transition region 305 where the rate of change of power from the second secondary optical power in the second secondary region 303 to the primary optical power in the primary region 301 changes at a fifth boundary point 321 between a fifth transition region 321 in the second power transition 305 and the third step 308, followed by a change in the rate of change of power at a sixth boundary point 320 between a third transition region 319 in the second power transition 305 and the third step 308.

[0073] In the exemplary embodiment of FIG. 8, the power of the primary region 301 is approximately -2D with a progression of optical power that gradually increases in positive power toward the outer edge. Such a gradual increase in power at the outer edge can result in effective or improved visual or visual performance in one or more aspects of visual or visual performance. For example, spherical aberration may be included in the primary region to correct, reduce, or manipulate aberrations of the combined eye and ophthalmic lens. Examples of the inclusion of such spherical aberration may improve visual clarity, contrast, contrast sensitivity, visual acuity, and overall quality of vision, or a combination thereof.

[0074] In certain embodiments, the power of the primary region may be constant, substantially constant, gradually increasing, gradually decreasing, modulated (i.e., undulating along its power profile), have an aberration profile (e.g., spherical aberration), or a combination thereof.

[0075] In the exemplary embodiment of FIG. 8, the frequencies of the first step 306, the second step 307, and the third step 308 are not constant within a step.

[0076] In certain embodiments, the power profile within a step may be constant, substantially constant, or vary gradually. In certain embodiments where the power of the steps varies gradually, the change in power over the width of the step may be 0-0.2D, 0-0.15D, or 0-0.1D. In certain embodiments having a power profile with two or more steps that vary gradually, the rate of change of the power profile between two or more steps may or may not be the same.

[0077] In the exemplary embodiment of FIG. 8, the power profile along the first power transition 304 and the second power transition 305 is monotonic.

[0078] By monotonic, it is meant that when the power transition decreases from one region to another (e.g., between a first secondary region and a primary region), the power profile decreases, is constant, is substantially decreasing, or is substantially constant along the power transition, including the step in the power transition. Conversely, when the power transition increases from one region to another (e.g., from a primary region to a second secondary region), it is meant that the power profile increases, is constant, is substantially increasing, or is substantially constant along the power transition, including the step in the power transition. In certain embodiments, the power transition has a monotonic power profile.

[0079] In the exemplary embodiment of FIG. 8 , the rate of change of optical power at boundary points 313 and 314 forming the first step 306 and the rate of change of optical power at boundary points 317 and 318 forming the second step 307 are less abrupt and / or more gradual.

[0080] In certain embodiments, a change in the rate of change of optical power may be considered "gradual" if the change in the rate of change occurs over a boundary width of 0.15 to 1 mm, 0.25 to 0.75 mm, or 0.3 to 0.5 mm.

[0081] Example 5 FIG. 9 illustrates an exemplary embodiment of a power profile for an optic zone of a lens. The example in FIG. a primary region 401 having a primary optical power; A central portion 411; a first secondary region 402 in the central portion 411 having a first secondary optical power; a first power transition region 404 having a first power transition from the primary region 401 to a first secondary region 402; A peripheral portion 410; a second secondary region 403 within the peripheral portion 410 having a second secondary optical power; a second power transition region 405 having a second power transition from the primary region 401 to a second secondary region 403; 1. An ophthalmic lens comprising an optic zone comprising: the first secondary optical power is more positive than the primary optical power and the second secondary optical power is more positive than the primary optical power; The first power transition includes at least a first step 406 in a first power transition region 404; at least a second step 407 in a second power transition region 405; The primary region 401 is associated with an ophthalmic lens that includes an optical region 409 having a different optical power than the primary region. 9, the power of the primary region 401 is about −2.5 D with an annular optical region 409 having an optical power that is about 0.75 D more positive than the primary power. Such an optical region may provide improved near vision for correcting presbyopia and / or reducing eye growth and / or reducing the progression of myopia.

[0082] In certain embodiments, the primary region may have one or more optical zones with a different or substantially different optical power than the primary region. In certain embodiments, the primary region may have one or more optical zones with a more positive or substantially more positive optical power than the primary region. In certain embodiments where the primary region may have two or more optical zones, the optical powers of the two or more optical zones within the primary region may be the same, substantially the same, or different.

[0083] Certain embodiments relate to uses of the lens excluding those which include or involve invasive steps which represent substantial physical interventions on the human or animal body, which require specialist medical expertise to perform and which, even if performed with the required specialist care and expertise, entail significant health risks, such as, for example, those which include introducing the lens into and / or on the human or animal eye, invasively altering the optical properties, and / or permanently deforming or replacing at least a portion of the human or animal eye crystalline lens.

[0084] Other Non-Limiting Exemplary Embodiments Further advantages of the claimed subject matter will become apparent from the following exemplary embodiments. Example A1. An ophthalmic lens comprising an optical zone having a primary region having an optical power and one or more secondary regions, At least one of the one or more secondary regions is located around the primary region; the one or more secondary regions have a more positive optical power compared to the optical power of the primary region; An ophthalmic lens in which the optical power transitions gradually between more negative and more positive powers with at least one step that does not include the primary region and at least one of the one or more secondary regions, where the magnitude of the rate of change of power decreases and then increases between the primary region and at least one or more secondary regions. Example A2. At least one primary region having at least one primary optical power; a first secondary region having a first optical power; a second secondary region having a second optical power; and 1. An ophthalmic lens comprising an optical zone comprising: at least one of the first secondary region and the second secondary region is around the at least one primary region, and the first and second optical powers are more positive than the at least one primary optical power; An ophthalmic lens in which there is a power transition from a primary optical power to a secondary optical power of an adjacent secondary region, with at least one step not including the primary and secondary powers in the primary and secondary regions, where the magnitude of the rate of change of the power transition decreases and then increases between adjacent primary and secondary regions. Example A3. At least one primary region having at least one primary optical power; at least two secondary regions including a first secondary region having a first optical power and a second secondary region having a second optical power; 1. An ophthalmic lens comprising an optical zone comprising: at least one of the first secondary region and the second secondary region is around the at least one primary region, and the first and second optical powers are more positive than the at least one primary optical power; An ophthalmic lens having a power transition from at least one primary optical power to at least one of a first optical power and a second optical power having at least one step that does not include the at least one primary optical power and the first and second optical powers, where the magnitude of the rate of change of the power transition rapidly decreases and then rapidly increases when the at least one primary region is adjacent to one of the first secondary region and the second secondary region. Example A4. An ophthalmic lens for correcting refractive errors of the eye and controlling eye growth, comprising an optical zone with a primary region having an optical power and one or more secondary regions, at least one of which is around the primary region and has a more positive optical power compared to the optical power of the primary region, the ophthalmic lens providing a gradual transition in optical power between the more negative and more positive powers with at least one step not including the primary region and one or more secondary regions, in which the magnitude of the rate of change of power between the primary region and the one or more secondary regions decreases and then increases by an amount and distance sufficient to improve the visual function or visual performance experienced by the lens. A5. An ophthalmic lens of one or more of embodiments A1-A3, wherein the lens is for correcting refractive error of the eye. A6. The ophthalmic lens of one or more of embodiments A1-A3, wherein the lens is for correcting refractive errors of the eye and for controlling eye growth. A7. One or more of the ophthalmic lenses of embodiments A1-A6, wherein the secondary optical power is more positive than the primary optical power by between 0.5D and 3.5D, between 0.75D and 2.5D, or between 1D and 2.5D. A8. One or more of the ophthalmic lenses of embodiments A1-Ax6, wherein the secondary optical power is more positive than the primary optical power by at least 0.5D, 0.75D, 1D, 2D, 2.5D, 3D, or 3.5D. A9. One or more of the ophthalmic lenses of Examples A1-A8, wherein the width of the primary region is about 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm. A10. The ophthalmic lens of one or more of Examples A1-A8, wherein the width of the primary region is from 0.2 mm to 5 mm, from 0.5 to 1 mm, from 0.5 mm to 2 mm, from 0.5 mm to 3 mm, from 1 mm to 4 mm, or from 2 mm to 4 mm. A11. The ophthalmic lens of one or more of Examples A1-A10, wherein the width of the central secondary region is between 0 mm and 3 mm, between 0.5 mm and 3 mm, between 1 mm and 2.5 mm, or between 2 mm and 2.5 mm. A12. The ophthalmic lens of any one or more of embodiments A1-A11, wherein the width of at least one of the steps is approximately 0.1 mm, 0.2 mm, or 0.3 mm. A13. The ophthalmic lens of one or more of embodiments A1-A11, wherein the width of at least two of the steps is approximately 0.1 mm, 0.2 mm, or 0.3 mm. A14. The ophthalmic lens of one or more of embodiments A1-A11, wherein at least three of the widths of the steps are approximately 0.1 mm, 0.2 mm, or 0.3 mm. A15. The ophthalmic lens of one or more of embodiments A1-A11, wherein the width of at least four of the steps is approximately 0.1 mm, 0.2 mm, or 0.3 mm. A16. The ophthalmic lens of one or more of embodiments A1-A11, wherein the width of at least one of the steps is about 0.1 mm, 0.2 mm, or 0.3 mm. A17. The ophthalmic lens of one or more of embodiments A1-A11, wherein the width of at least two of the steps is about 0.1 mm, 0.2 mm, or 0.3 mm. A18. The ophthalmic lens of one or more of embodiments A1-A11, wherein at least three of the steps have a width of about 0.1 mm, 0.2 mm, or 0.3 mm. A19. The ophthalmic lens of one or more of embodiments A1-A11, wherein at least four of the steps have a width of about 0.1 mm, 0.2 mm, or 0.3 mm. A20. The ophthalmic lens of any one or more of embodiments A1-A19, wherein the rate of change of the gradual transition of the optical power of one or more of the steps increases monotonically. A21. The ophthalmic lens of any one of embodiments A1 to A19, wherein the rate of change of the gradual transition of the optical power of one or more of the steps decreases monotonically. A22. The ophthalmic lens of one or more of embodiments A1-A21, wherein the rate of change of at least some of the optical power in one or more of the steps is uniform or substantially uniform. A23. The ophthalmic lens of any one of embodiments A1-A21, wherein at least some of the rates of change of optical power in one or more of the steps are zero or substantially uniform. A24. The ophthalmic lens of one or more of Examples A1-A23, wherein at least some of the rates of change of the optical power of one or more of the steps are rapid and occur over a boundary point width of less than 0.3 mm, 0.25 mm, 0.2 mm, or 0.15 mm. A25. The ophthalmic lens of one or more of embodiments A1-A23, wherein at least some of the rates of change of the optical power of one or more of the steps are gradual and occur over a boundary point width of 0.15-1 mm, 0.25-0.75 mm, or 0.3-0.5 mm. A26. An ophthalmic lens of one or more of embodiments A1 to A25, wherein the lens is for the correction of myopia and control of the progression of myopia. A27. One or more ophthalmic lenses of embodiments A1 to A25, wherein the lens is for the correction of one or more of the following refractive errors of the eye: myopia, hyperopia, astigmatism and presbyopia. A28. The ophthalmic lens of one or more of embodiments A1-A27, wherein the lens is a contact lens. A29. The ophthalmic lens of one or more of embodiments A1-A27, wherein the lens is an intraocular lens. A30. An ophthalmic lens of one or more of embodiments A1-A29, wherein the lens improves visual function or visual performance. A31. One or more of the ophthalmic lenses of embodiments A1-A29, wherein the lens improves one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision. A32. A method of correcting myopia and controlling the progression of myopia using one or more lenses of embodiments A1-A29. A33. Method for correcting one or more of the following refractive errors of the eye: myopia, hyperopia, astigmatism and presbyopia using one or more lenses of embodiments A1-A. A34. A method of improving visual function or visual performance using one or more lenses of embodiments A1-A29. A35. A method of improving one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision using one or more lenses of Examples A1-A29. Example B1. At least one inner portion having at least a first power profile and at least one outer portion having at least a second power profile; 1. An ophthalmic lens comprising an optic zone comprising: a first power profile of the at least one inner portion having at least a first step, the first step being bounded on either side by a first boundary point and a second boundary point, the first power profile having a first change in rate of change of power at the first boundary point and a second change in rate of change of power at the second boundary point; An ophthalmic lens, wherein the second power profile of at least one outer portion has at least a second step, the second step being bounded on either side by a third boundary point and a fourth boundary point, the second power profile having a third change in rate of change of power at the third boundary point and a fourth change in rate of change of power at the fourth boundary point. B2. The ophthalmic lens of embodiment B1, wherein the at least one inner portion having at least a first step has 1-6, 1-5, 2-5, or 2-4 steps. B3. The ophthalmic lens of embodiment B1 or B2, wherein the at least one inner portion having at least a first step has 1-6, 1-5, 2-5, or 2-4 steps. B4. The ophthalmic lens of embodiment B1-B2 or B3, in which the rate of change of the power at the boundary point is rapid. B5. The ophthalmic lens of Example B1 to B2 or B3, in which the rate of change in power at the boundary point is gradual. B6. The ophthalmic lens of any one of embodiments B1-B4 or B5, wherein the power within the steps is one or more of the following: constant, substantially constant, decreasing, and increasing. B7. The ophthalmic lens of any one of embodiments B1 to B5 or B6, wherein the power in the first step and the power in the second step are the same, substantially the same, or different. B8. The ophthalmic lens of any one of embodiments B1 to B6 or B7, wherein the step width is 0 mm to 1.5 mm, 0.1 mm to 1.25 mm, 0.1 mm to 1 mm, or 0.15 mm to 1 mm. B9. A method of correcting myopia and controlling the progression of myopia using one or more lenses of embodiments B1-B8. B10. A method of correcting one or more of the following refractive errors of the eye: myopia, hyperopia, astigmatism and presbyopia using one or more lenses of embodiments B1-B8. B11. A method of improving visual function or visual performance using one or more lenses of embodiments B1-B8. B12. A method of improving one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision using one or more lenses of Examples B1-B8. Example C1. At least one primary region having at least one primary optical power; at least two secondary regions including a first secondary region having a first optical power and a second secondary region having a second optical power; 1. An ophthalmic lens comprising an optical zone comprising: at least one of the first secondary region and the second secondary region is around the at least one primary region, and the first and second optical powers are more positive than the at least one primary optical power; An ophthalmic lens having a first power transition from at least one primary optical power to a first optical power having at least a first step, and a second power transition from at least one primary optical power to a second optical power having at least a second step, the steps not including at least one primary region and first and second secondary regions, and the magnitude of the rate of change of the power transition for at least one of the first step and the second step decreases and then increases. C2. The ophthalmic lens of embodiment C1, wherein the magnitude of the rate of change of the power transition rapidly decreases and then rapidly increases. C3. The ophthalmic lens of embodiment C1, in which the magnitude of the rate of change of the power transition gradually decreases and then gradually increases. C4. The ophthalmic lens of embodiments C1-C2, or C3, wherein at least one primary region has a width of 0.2 mm to 2 mm, 0.3 mm to 1.75 mm, or 0.4 mm to 1.5 mm. C5. The ophthalmic lens of embodiments C1-C3, or C4, wherein the first and second optical powers are more positive than the at least one primary optical power by an amount up to 5D, 4D, or 3D. C6. The ophthalmic lens of any one of embodiments C1 to C4, or C5, wherein at least one of the first secondary region and the second secondary region has a width of 0 mm to 2 mm, 0.1 mm to 1.75 mm, or 0.2 mm to 1.5 mm. C7. The ophthalmic lens of embodiments C1-C5, or C6, wherein at least one of the first power transition and the second power transition has 1-6, 1-5, 2-6, 2-5, or 2-4 steps. C8. The ophthalmic lens of any one of embodiments C1 to C6 or C7, wherein for at least one of the first step and the second step, the width is 0 mm to 1.5 mm, 0.1 mm to 1.25 mm, 0.1 mm to 1 mm, or 0.15 mm to 1 mm. C9. The ophthalmic lens of any of embodiments C1-C7 or C8, wherein for at least one of the first and second steps, the power may be up to 5D, 4D, or 3D more positive than the power of the primary region. C10. The ophthalmic lens of any one of embodiments C1 to C8 or C9, wherein for at least one of the first and second steps, the power is at most 5D, 4D, or 3D less positive than the power of at least one of the first and second secondary regions. C11. A method of correcting myopia and controlling the progression of myopia using one or more lenses of embodiments C1-C10. C12. A method of correcting one or more of the following refractive errors of the eye: myopia, hyperopia, astigmatism, and presbyopia, using one or more lenses of embodiments C1-C10. C13. A method of improving visual function or visual performance using one or more lenses of embodiments C1-C10. C11. A method of improving one or more of the following: clarity of vision, degree of diplopia, degree of ghosting, distortion, contrast, contrast sensitivity, visual acuity, and overall quality of vision using one or more lenses of embodiments C1-C10. D1. At least one central portion having at least a first power profile and at least one peripheral portion having at least a second power profile; 1. An ophthalmic lens comprising an optic zone comprising: a first power profile of the at least one central portion having at least a first step, the first step being bounded on either side by a first boundary point and a second boundary point, the first power profile having a first change in rate of change of power at the first boundary point and a second change in rate of change of power at the second boundary point; An ophthalmic lens, wherein the second power profile of at least one peripheral portion has at least a second step, the second step being bounded on either side by a third boundary point and a fourth boundary point, the second power profile having a third change in rate of change of power at the third boundary point and a fourth change in rate of change of power at the fourth boundary point. D2. The ophthalmic lens of embodiment D1, wherein at least one central portion has 1-6, 1-5, 2-5, 2-6, 2-4 steps, 3-5 steps, or 3-6 steps. D3. The ophthalmic lens of embodiment D1 or D2, wherein at least one central portion has at least 2, 3, 4, 5 steps. D4. At least one ophthalmic lens of preceding embodiments D1-D3, wherein at least one peripheral portion has 1-6, 1-5, 2-5, 2-4 steps, 3-5 steps, or 3-6 steps. D5. The ophthalmic lens of at least one of the preceding embodiments D1-D4, wherein at least one peripheral portion has at least 2, 3, 4, or 5 steps. D6. The ophthalmic lens of at least one of the preceding embodiments D1-5, wherein the rate of change of power at one or more of the demarcation points is rapid. D7. An ophthalmic lens of at least one of the preceding embodiments D1 to D6, wherein the rate of change of power at one or more of the demarcation points is gradual. D8. The ophthalmic lens of at least one of the preceding embodiments D1-D7, wherein the power within one or more of the steps is one or more of the following: constant, substantially constant, decreasing, and increasing. D9. The ophthalmic lens of at least one of the preceding embodiments D1 to D8, wherein the power in the first step and the power in the second step are the same, substantially the same, or different. D10. The ophthalmic lens of at least one of the preceding embodiments D1-D9, wherein one or more of the steps have a width between 0 mm and 1.5 mm, between 0.1 mm and 1.25 mm, between 0.1 mm and 1 mm, or between 0.15 mm and 1 mm. D11. The ophthalmic lens of at least one of the preceding embodiments D1-D10, wherein one or more of the steps have a width of at least 0.1 mm, 0.15 mm, 0.25 mm, 0.5 mm, 1 mm, or 1.25 mm. D11. D12. An ophthalmic lens of at least one of the preceding embodiments D1 to D11, wherein the lens is for the correction of myopia and / or control of the progression of myopia. D13. An ophthalmic lens of at least one of the preceding embodiments D1 to D12, wherein the lens is for the correction of presbyopia. D14. At least one of the ophthalmic lenses of preceding embodiments D1-D13, wherein at least one peripheral portion has at least four or five radially spaced steps and at least one central portion has at least two or three radially spaced steps. D15. At least one of the ophthalmic lenses of preceding embodiments D1-D13, wherein at least one peripheral portion has 2-6 radially spaced steps and at least one central portion has 1-2 radially spaced steps. D16. At least one of the ophthalmic lenses of preceding embodiments D1-D13, wherein at least one peripheral portion has 2-4 radially spaced steps and at least one central portion has 2-3 radially spaced steps. E17. At least one primary area having at least one primary optical power; at least two secondary regions including a first secondary region having a first optical power and a second secondary region having a second optical power; 1. An ophthalmic lens comprising an optical zone comprising: at least one of the first secondary region and the second secondary region is around the at least one primary region, and the first and second optical powers are more positive than the at least one primary optical power; An ophthalmic lens having a first power transition from at least one primary optical power to a first optical power having at least a first step, and a second power transition from at least one primary optical power to a second optical power having at least a second step, the steps not including at least one primary region and first and second secondary regions, and wherein for at least one of the first steps and at least one of the second steps, the magnitude of the rate of change of the power transition decreases at a boundary point before the step and then increases at a boundary point after the step. E18. The ophthalmic lens of embodiment E17, wherein with respect to the step, the magnitude of the rate of change of the power transition at the boundary point before the step decreases in one or more of the following manners: moderate, rapid and gradual, and then at the boundary point after the step, increases in one or more of the following manners: moderate, rapid and gradual. E19. The ophthalmic lens of at least one of embodiments E17-E18, wherein the magnitude of the rate of change of the power transition decreases rapidly at the boundary point before the step, and then increases rapidly at the boundary point after the step. E20. The ophthalmic lens of at least one of embodiments E17-E18, wherein the magnitude of the rate of change of the power transition gradually decreases at the boundary point before the step and then gradually increases at the boundary point after the step. E21. At least one of the ophthalmic lens of embodiments E17-E18, wherein the magnitude of the rate of change of the power transition moderately decreases at the boundary point before the step, and then moderately increases at the boundary point after the step. E22. At least one of the ophthalmic lenses of embodiments E17-E21, wherein at least one primary region has a width of 0.2 mm to 2 mm, 0.3 mm to 1.75 mm, or 0.4 mm to 1.5 mm. E23. At least one of the ophthalmic lenses of embodiments E17-E22, wherein the first and second optical powers are more positive than the at least one primary optical power by an amount up to 5D, 4D, or 3D. E24. The ophthalmic lens of at least one of embodiments E17 to E23, wherein at least one of the first secondary region and the second secondary region has a width of 0 mm to 2 mm, 0.1 mm to 1.75 mm, or 0.2 mm to 1.5 mm. E25. The ophthalmic lens of at least one of embodiments E17-E24, wherein at least one of the first power transition and the second power transition has 1-6, 1-5, 2-6, 2-5, or 2-4 steps. E26. The ophthalmic lens of at least one of embodiments E17-E25, wherein at least one of the first power transition and the second power transition has 1-5, 2-4, 1-3, 2-3, 2-5, or 2-6 radially spaced steps. E27. The ophthalmic lens of at least one of embodiments E17-E26, wherein the first power transition and the second power transition have 1-5, 2-4, 1-3, 2-3, 2-5, or 2-6 radially spaced steps. E28. The ophthalmic lens of at least one of embodiments E17-E27, wherein at least one of the first power transition and the second power transition has 1-5, 2-4, 1-3, 2-3, 2-5, or 2-6 radially spaced steps between one or more of the secondary regions or between each secondary region. E29. The ophthalmic lens of at least one of embodiments E17-E28, wherein there are at least 2, 3, 4, 5, or 6 radially spaced steps between one or more or each of the secondary regions. E30. The ophthalmic lens of at least one of embodiments E17 to E29, wherein for at least one of the first and second steps, the width is between 0 mm and 1.5 mm, between 0.1 mm and 1.25 mm, between 0.1 mm and 1 mm, or between 0.15 mm and 1 mm. E31. The ophthalmic lens of at least one of embodiments E17-E30, wherein for at least one of the first and second steps, the power is at most 5D, 4D, or 3D more positive than the power of the primary region. E32. At least one of the ophthalmic lens of embodiments E17-E30, wherein for the first and second steps, the power is up to 5D, 4D, or 3D more positive than the power of the primary region. E33. At least one of the ophthalmic lenses of embodiments E17 to E32, wherein for at least one of the first and second steps, the power is at most 5D, 4D, or 3D less positive than the power of at least one of the first and second secondary regions. E34. At least one of the ophthalmic lenses of embodiments E17 to E32, wherein for the first step and the second step, the power is at most 5D, 4D, or 3D less positive than the power of at least one of the first secondary region and the second secondary region. E35. The ophthalmic lens of at least one of embodiments E17 to E32, wherein for the first and second steps, the power is at most 5D, 4D, or 3D less positive than the power of the first and second secondary regions. E36. An ophthalmic lens of at least one of the preceding embodiments E17 to E35, wherein the lens is for the correction of myopia and / or control of the progression of myopia. E37. An ophthalmic lens of at least one of the preceding embodiments E17 to E35, wherein the lens is for the correction of presbyopia.

[0085] It will be understood that the invention disclosed and defined herein includes any and all alternative combinations of two or more of the individual features described or apparent from the text or drawings, all of these different combinations constituting various alternative aspects of the invention.

Claims

1. at least one central portion having at least a first power profile and at least one peripheral portion having at least a second power profile; In an ophthalmic lens comprising an optic zone comprising: the first power profile of the at least one central portion has at least a first step, the first step being bounded on either side by a first boundary point and a second boundary point, the first power profile having a first change in rate of change of power at the first boundary point and a second change in rate of change of power at the second boundary point; An ophthalmic lens, characterized in that the second power profile of the at least one peripheral portion has at least a second step, the second step being bounded on either side by a third boundary point and a fourth boundary point, the second power profile having a third change in rate of change of power at the third boundary point and a fourth change in rate of change of power at the fourth boundary point.

2. 10. The ophthalmic lens of claim 1, wherein the at least one central portion has 1 to 6, 1 to 5, 2 to 5, 2 to 6, 2 to 4 steps, 3 to 5 steps, or 3 to 6 steps.

3. 3. An ophthalmic lens according to claim 1 or 2, characterized in that said at least one central portion has at least 2, 3, 4 or 5 steps.

4. 4. The ophthalmic lens according to claim 1, wherein the at least one peripheral portion has 1 to 6, 1 to 5, 2 to 5, 2 to 4 steps, 3 to 5 steps, or 3 to 6 steps.

5. 5. An ophthalmic lens according to any one of the preceding claims, characterized in that said at least one peripheral portion has at least 2, 3, 4 or 5 steps.

6. 6. An ophthalmic lens according to claim 1, wherein the rate of change of the power at one or more of the boundary points is rapid.

7. 7. An ophthalmic lens according to claim 1, wherein the rate of change of the power at one or more of the boundary points is gradual.

8. 8. The ophthalmic lens of claim 1, wherein the power within one or more of the steps is one or more of constant, substantially constant, decreasing, and increasing.

9. 9. The ophthalmic lens according to claim 1, wherein the power in the first step and the power in the second step are the same, substantially the same or different.

10. 10. The ophthalmic lens of claim 1, wherein one or more of the steps have a width of 0 mm to 1.5 mm, 0.1 mm to 1.25 mm, 0.1 mm to 1 mm, or 0.15 mm to 1 mm.

11. 11. An ophthalmic lens according to any one of the preceding claims, wherein one or more of the steps have a width of at least 0.1 mm, 0.15 mm, 0.25 mm, 0.5 mm, 1 mm, or 1.25 mm.

12. 12. An ophthalmic lens according to any one of the preceding claims, characterized in that said lens is for the correction of myopia and / or for controlling the progression of myopia.

13. 13. An ophthalmic lens according to any one of the preceding claims, characterized in that the lens is for the correction of presbyopia.

14. 14. An ophthalmic lens according to any one of claims 1 to 13, characterized in that the at least one peripheral portion has at least four or five radially spaced steps and the at least one central portion has at least two or three radially spaced steps.

15. 14. An ophthalmic lens according to any one of claims 1 to 13, characterized in that the at least one peripheral portion has from 2 to 6 radially spaced steps and the at least one central portion has from 1 to 2 radially spaced steps.

16. 14. An ophthalmic lens according to any one of claims 1 to 13, characterized in that the at least one peripheral portion has between 2 and 4 radially spaced steps and the at least one central portion has between 2 and 3 radially spaced steps.

17. at least one primary region having at least one primary optical power; at least two secondary regions including a first secondary region having a first optical power and a second secondary region having a second optical power; 1. An ophthalmic lens comprising an optical zone comprising: at least one of the first secondary region and the second secondary region is around the at least one primary region, and the first and second optical powers are more positive than the at least one primary optical power; An ophthalmic lens comprising: a first power transition from the at least one primary optical power to the first optical power having at least a first step; and a second power transition from the at least one primary optical power to the second optical power having at least a second step, the steps not including the at least one primary region and the first and second secondary regions, and wherein for at least one of the first steps and at least one of the second steps, the magnitude of the rate of change of the power transition decreases at the boundary point before the step and then increases at the boundary point after the step.

18. 18. The ophthalmic lens of claim 17, wherein, with respect to the step, the magnitude of the rate of change of the power transition at the boundary point before the step decreases moderately, rapidly, and / or gradually, and then increases moderately, rapidly, and / or gradually at the boundary point after the step.

19. 19. An ophthalmic lens according to claim 17 or 18, characterized in that the magnitude of the rate of change of the power transition rapidly decreases at the boundary point before the step and then rapidly increases at the boundary point after the step.

20. 19. The ophthalmic lens of claim 17 or 18, characterized in that the magnitude of the rate of change of the power transition gradually decreases at the boundary point before the step, and then gradually increases at the boundary point after the step.

21. 19. An ophthalmic lens according to claim 17 or 18, characterized in that the magnitude of the rate of change of the power transition moderately decreases at the boundary point before the step and then moderately increases at the boundary point after the step.

22. 22. The ophthalmic lens of any one of claims 17 to 21, wherein the at least one primary region has a width of 0.2 mm to 2 mm, 0.3 mm to 1.75 mm, or 0.4 mm to 1.5 mm.

23. 23. An ophthalmic lens according to any one of claims 17 to 22, characterized in that the first and second optical powers are more positive than the at least one primary optical power by an amount of up to 5D, 4D, or 3D.

24. 24. The ophthalmic lens of any one of claims 17 to 23, wherein at least one of the first secondary region and the second secondary region has a width of 0 mm to 2 mm, 0.1 mm to 1.75 mm, or 0.2 mm to 1.5 mm.

25. 25. The ophthalmic lens according to claim 17, wherein at least one of the first power transition and the second power transition has 1 to 6, 1 to 5, 2 to 6, 2 to 5, or 2 to 4 steps.

26. 26. An ophthalmic lens according to any one of claims 17 to 25, characterized in that at least one of the first power transition and the second power transition has 1 to 5, 2 to 4, 1 to 3, 2 to 3, 2 to 5, or 2 to 6 radially spaced steps.

27. 27. The ophthalmic lens of any one of claims 17 to 26, wherein the first power transition and the second power transition have 1 to 5, 2 to 4, 1 to 3, 2 to 3, 2 to 5, or 2 to 6 radially spaced steps.

28. 28. An ophthalmic lens according to any one of claims 17 to 27, characterized in that at least one of the first power transition and the second power transition has 1 to 5, 2 to 4, 1 to 3, 2 to 3, 2 to 5, or 2 to 6 radially spaced steps between one or more of the or each secondary region.

29. 29. An ophthalmic lens according to any one of claims 17 to 28, characterized in that there are at least 2, 3, 4, 5 or 6 radially spaced steps between the or each secondary region or regions.

30. 30. The ophthalmic lens of claim 17, wherein the width of at least one of the first step and the second step is 0 mm to 1.5 mm, 0.1 mm to 1.25 mm, 0.1 mm to 1 mm, or 0.15 mm to 1 mm.

31. 31. An ophthalmic lens according to any one of claims 17 to 30, characterized in that for at least one of the first step and the second step, the power is up to 5D, 4D, or 3D more positive than the power of the primary region.

32. 31. An ophthalmic lens according to any one of claims 17 to 30, characterized in that, for the first step and the second step, the power is up to 5D, 4D, or 3D more positive than the power of the primary region.

33. 33. An ophthalmic lens according to any one of claims 17 to 32, characterized in that for at least one of the first step and the second step, the power is less positive by up to 5D, 4D, or 3D than the power of at least one of the first secondary region and the second secondary region.

34. 33. An ophthalmic lens according to any one of claims 17 to 32, characterized in that, for the first step and the second step, the power is less positive by up to 5D, 4D, or 3D than the power of at least one of the first secondary region and the second secondary region.

35. 33. An ophthalmic lens according to any one of claims 17 to 32, characterized in that for the first step and the second step, the power is less positive than the power of the first secondary region and the second secondary region by up to 5D, 4D, or 3D.

36. 36. An ophthalmic lens according to any one of claims 17 to 35, characterized in that said lens is for the correction of myopia and / or for controlling the progression of myopia.

37. 36. An ophthalmic lens according to any one of claims 17 to 35, characterized in that said lens is for the correction of presbyopia.

Images