Ophthalmic lens with non-concentric microstructures

Abstract

There is disclosed a data set stored on a computer readable medium or implemented in the form of a computer readable data signal, the data set comprising a digital twin of an ophthalmic lens (300) configured for use for manufacturing said ophthalmic lens (300), said ophthalmic lens (300) comprising:-a clear viewing area (309); -a plurality of compact out-of-focus structures (312). A plurality of compact out-of-focus structures (312) are arranged along a structure line (305) having point-free symmetry and axial symmetry and corresponding to a predefined contour line along which the visual performance indicator has a constant value, the visual performance indicator characterizes a visual performance of the ophthalmic lens (300) within the clear viewing area (309) for a wearer wearing the ophthalmic lens (300). Alternatively, the plurality of compact out-of-focus structures (312) are arranged along a structure line (305) at a predefined constant distance from the predefined isoline along which the visual performance indicator has a constant value.

Description

Technical Field

[0001] The present invention relates to: a data set according to the preamble of claim 1, the data set comprising a) data describing a digital twin of an ophthalmic lens, the digital twin being configured for the use in manufacturing the ophthalmic lens, or b) data comprising computer-readable instructions for controlling one or more manufacturing machines to manufacture an ophthalmic lens; a method according to the preamble of claim 10, configured for performing a computer-implemented calculation on a digital twin of an ophthalmic lens; and a kit according to the preamble of claim 13, the kit comprising: (a) an ophthalmic lens and (b) information including a predefined wearing position. Background Art

[0002] WO 2010 / 075319 A2 relates to the importance of peripheral retinal images for determining myopia growth. This document presents a therapeutic treatment method for preventing, improving or reversing eye length-related disorders. The therapeutic treatment method comprises the steps of: identifying an eye length-related disorder of a patient; and inducing artificial blurring of the patient's peripheral vision so as to reduce the average spatial frequency of the images input to the retina of the eye, such that it exceeds a threshold spatial frequency to inhibit further elongation of the patient's eye. In particular, this document proposes to provide an ophthalmic lens for a patient, the ophthalmic lens having a zone comprising a plurality of elements selected from the group consisting of: (i) protrusions on the surface of the ophthalmic lens; (ii) depressions on the surface of the ophthalmic lens; (iii) a first translucent inclusion in the ophthalmic lens material; and (iv) a first transparent inclusion in the ophthalmic lens material, whereby the refractive index of the first transparent inclusion is different from the refractive index of the ophthalmic lens material. Generally, these elements are dot-shaped elements having a non-zero dot density in the range between 0 and 8 dots per square millimeter. The ophthalmic lens has another zone surrounded by the zone comprising the plurality of elements and providing clear vision.

[0003] WO 2018 / 026697 A1 discloses glasses comprising a frame and a pair of ophthalmic lenses mounted in the frame. The ophthalmic lenses comprise a dot pattern distributed on each ophthalmic lens. The dot pattern comprises an array of dots spaced apart by a distance of 1 mm or less. The maximum size of each dot is 0.3 mm or less.

[0004] WO 2019 / 152438 A1 discloses an ophthalmic lens, which comprises a lens material having two opposite curved surfaces and a scattering region surrounding the light-transmitting aperture. The scattering region has a plurality of spaced-apart scattering centers, the size and shape of which are determined to scatter incident light. The scattering centers are arranged in a pattern that includes an irregular variation in the spacing between adjacent scattering centers and / or an irregular variation in the size of the scattering centers.

[0005] The myopia-reducing glasses disclosed in, for example, WO 2019 / 152438 A1 are composed of a spectacle frame and ophthalmic lenses mounted in the spectacle frame. Generally, the ophthalmic lenses can be plano lenses, single vision lenses (e.g., having a positive or negative dioptric power), or multifocal lenses (e.g., bifocal lenses or progressive lenses). Each of the ophthalmic lenses has a clear vision area surrounded by an area with reduced contrast. The clear vision area is positioned to coincide with the coaxial viewing position of the wearer, while the area with reduced contrast corresponds to the peripheral vision of the wearer. The area with reduced contrast is composed of an array of dots that reduce the contrast of objects in the peripheral vision of the wearer by scattering the light passing through these areas into the eyes of the wearer. Generally, the dots can be provided by forming protrusions and / or recesses on one or both surfaces of the ophthalmic lens and / or by forming scattering inclusions in the lens material itself in these areas.

[0006] Some wearers of ophthalmic lenses having an area with reduced contrast as disclosed in WO 2019 / 152438 A1 or an area with microlenses / minilenses as disclosed in WO 2019 / 206569 A1 around the central clear vision area have reported some discomfort during use.

[0007] The Hong Kong Polytechnic University and Hoya disclosed spectacle lenses with a similar structure in US2017 / 131567 A1, that is, spectacle lenses having protrusions on the surface of the spectacle lenses. These spectacle lenses are called MSMD (multi segment myopic defocus) lenses. The corresponding technical concept is called D.I.M.S. (Defocus Incorporated Multiple Segments) technology. For example, details are disclosed at https: / / www.hoyavision.com / en-hk / discover-products / for-spectacle-wearers / special-lenses / myosmart / . Embodiments of these spectacle lenses should inhibit the progression of myopia while correcting myopia. The spectacle lenses of this embodiment shown in US2017 / 131567 A1 are meniscus concave lenses, the front surface of which is formed as a convex curved surface curved toward the object side, and the rear surface of which is formed as a concave surface having a curvature greater than that of the front surface. In addition, the spectacle lens has a first zone at the center of the spectacle lens. The first zone has a first refractive power based on a prescription for correcting myopia, and a second zone surrounding the first zone includes a plurality of separate island-shaped regions.

[0008] The front surface of each island-shaped region in the second zone is formed as a convex spherical surface shape toward the object side, and the curvature of the convex spherical surface shape is greater than the curvature of the front surface of the first zone. Accordingly, the refractive power of these independent island-shaped regions in the second zone is 2.00D to 5.00D greater than the refractive power of the first zone. Correspondingly, the island-shaped regions in the second zone focus the image focused on the retina of the eye by the first zone on a point in front of the retina.

[0009] Each island-shaped region covers an area of about 0.50 mm2 to 3.14 mm2 of the spectacle lens and has a circular shape with a diameter of about 0.8 mm to 2.0 mm. The plurality of island-shaped regions are arranged approximately uniformly in the vicinity of the first zone, and the distance between them is almost equal to the radius value of the island-shaped region.

[0010] Similar methods for Essilor's Stellest spectacle lenses are described in detail in EP 3 553 594 A1, EP 3 561 578 A1, WO 2019 / 166653 A1, WO 2019 / 166654 A1, WO 2019 / 166655 A1, WO 2019 / 166657 A1, WO 2019 / 166659 A1 and WO 2019 / 206569 A1, respectively. The spectacle lenses described therein include microlenses / minilenses which are aspherical and have a refractive power with an absolute value in the range between 2.0 D and 7.0 D at their geometric center and a refractive power with an absolute value in the range between 1.5 D and 6.0 D at their periphery. The optical refractive power provided by the aspherical microlenses / minilenses exceeds the refractive power of the clear central zone of the spectacle lens by 0.5 D or more.

[0011] WO 2020 / 014613 A1 discloses a myopia control spectacle lens which may comprise one or more defocus elements. The myopia control spectacle lens described therein may comprise a clear central zone without said defocus elements. Exemplarily, the document relates to a region including an island lens.

[0012] The closest prior art on which the invention of CN 215006124 U is based discloses an asymmetric multi-point peripheral myopic defocus spectacle lens for controlling juvenile myopia, the aim being to solve the problem of further deepening refractive error due to visual discomfort after wearing existing myopic defocus spectacle lenses for controlling juvenile myopia. The rear surface of the lens is an aspherical surface or a hyper-ring surface. The lens is characterized in that the lens comprises a central bright vision region and a peripheral myopic defocus region; the central vision region is positioned in the middle of the lens for correcting myopia and is asymmetrically distributed in an inclined T-shape around the geometric center of the lens; the peripheral myopic defocus region of the lens is located on the periphery of the central bright vision region. The central bright vision region extends obliquely in a T-shape, so that sudden changes in the optical image in the viewing area can be effectively reduced when a juvenile reads at a short distance.

[0013] US2022 / 0197058 A1 discloses spectacle lenses that can be used to inhibit myopia progression. The spectacle lenses can achieve improved vision by myopic refractive correction visibility and simultaneously inhibiting myopia progression. One embodiment (Figure 7) discloses a spectacle lens that provides spots with progressive characteristics in the peripheral region where astigmatism occurs. These spots are arranged to offset the astigmatism of the spectacle lens.

[0014] The disadvantage of such spectacle lenses is that either the central clear vision area is small and the myopia control functional area in the periphery is large, resulting in a relatively high degree of discomfort for the wearer, or the central clear vision area is large and the myopia control functional area in the periphery is small, resulting in a relatively low level of myopia control function.

[0015] Problem to be solved

[0016] Therefore, in view of CN 215006124 U, the problem of the present invention is to provide: a data set that includes a) data describing a digital twin of a spectacle lens or b) data containing computer-readable instructions; a method configured for performing computer-implemented calculations on the digital twin of a spectacle lens; and a kit that includes (a) a spectacle lens and (b) information including a predefined wearing position in order to optimize the position of the myopia retardation structure on the spectacle lens, thereby achieving a well-balanced myopia control function. Specifically, the problem to be solved is to provide a spectacle lens that avoids areas that cause discomfort to the wearer without providing a myopia retardation effect. Summary of the invention

[0017] This problem is solved in the case of the data set by the features of the characterizing part of claim 1, which data set includes a) data describing a digital twin of a spectacle lens or b) data containing computer-readable instructions.

[0018] The above problem is solved in the case of the method configured for performing computer-implemented calculations on the digital twin of a spectacle lens by the features of the characterizing part of claim 10.

[0019] This problem is solved in the case of the kit by the features of the characterizing part of claim 13, which kit includes (a) a spectacle lens and (b) information including a predefined wearing position.

[0020] Advantageous embodiments and developments of the present invention are the subject matter of the dependent claims.

[0021] A first aspect of the present invention as outlined above relates to a data set stored on a computer-readable medium or implemented in the form of a computer-readable data signal, which data set includes at least one of the following types of data:

[0022] a. A digital twin of a spectacle lens, which digital twin is configured for manufacturing the spectacle lens, or

[0023] b. Data containing computer-readable instructions for controlling one or more manufacturing machines to manufacture the spectacle lens.

[0024] The spectacle lens is configured to be positioned in a predefined wearing position in front of the eyes of a predefined wearer according to section 3.2.36 of ISO 13666:2019(E), and the spectacle lens comprises:

[0025] - a clear vision area,

[0026] - at least one item from the group consisting of:

[0027] (i) an elongated defocus structure,

[0028] (ii) a plurality of compact defocus structures,

[0029] (iii) an elongated diffusion structure, and

[0030] (iv) a plurality of compact diffusion structures.

[0031] The data set of the present invention is characterized in that the (i) elongated defocus structure and / or the (ii) plurality of compact defocus structures and / or the (iii) elongated diffusion structure and / or the (iv) plurality of diffusion structures are arranged along a structural line without point symmetry and axial symmetry. Furthermore, the structural line corresponds to a predefined isoline, and the visual performance index has a constant value along the predefined isoline. The visual performance index characterizes the visual performance of the spectacle lens in the clear vision area for a wearer wearing the spectacle lens in a predefined wearing position in front of the eyes. Alternatively, these structures are arranged along a structural line at a predefined constant distance from the predefined isoline, and the visual performance index has a constant value along the predefined isoline.

[0032] In the context of the present invention, the term "data set" describes an item comprising at least one piece of information, such as a numerical item or an alphanumerical item. The data set can be provided in a computer-readable form, such as a computer-readable medium or a computer-readable data signal.

[0033] The term "computer-readable medium" refers to a medium capable of storing data in a format readable by a computer device.

[0034] The term "digital twin of a spectacle lens" refers to a digital representation of the spectacle lens and is the product of the design or calculation process of the spectacle lens. In other words, if the lens designer has completed the design or calculation process of the spectacle lens, the data set of the spectacle lens is the result of the said design or calculation process. The data set is configured for the purpose of manufacturing the spectacle lens. In other words, the spectacle lens manufacturer uses the data set to produce the actual spectacle lens.

[0035] As is commonly used, the term "eyeglass lens" refers to an ophthalmic lens that is worn in front of the eye but does not touch the eye (DIN ISO 13666:2019, section 3.5.2), where an ophthalmic lens is a lens intended for measuring, correcting, and / or protecting the eye, or altering its appearance (DIN ISO 13666:2019, section 3.5.1).

[0036] The term "wearing position" refers to the position (including orientation) of the eyeglass lens relative to the eye and the face during wearing (DIN ISO 13666:2019, section 3.2.36). The wearing position is determined by the rake angle, the bevel angle, and the vertex distance.

[0037] The term "rake angle" is the vertical angle in the vertical plane containing the principal direction between the horizontal direction and the perpendicular direction to a reference line passing through the vertices of the upper and lower rims of the frame (DIN ISO 13666:2019, section 3.2.37), where the principal direction is the direction of the line of sight to an object at infinity measured in the habitual head and body posture when looking straight ahead with the naked eye (usually taken as the horizontal direction) (DIN ISO 13666:2019, section 3.2.25), and the line of sight is the optical path from a point of interest in object space (i.e., the fixation point) to the center of the entrance pupil of the eye and its continuation in image space from the center of the exit pupil to the retinal fixation point (usually the fovea) (DIN ISO 13666:2019, section 3.2.24). Typical values of the actual wearing rake angle lie within the range of -20 degrees to +30 degrees.

[0038] The term "bevel angle" is the horizontal angle in the horizontal plane containing the principal direction between the principal direction and the perpendicular direction to a reference line passing through the vertices of the nasal and temporal rims of the frame (DIN ISO 13666:2019, section 3.2.38). Typical values of the bevel angle lie within the range of -5 degrees to +30 degrees.

[0039] The term "vertex distance" is the horizontal distance measured between the posterior surface of the eyeglass lens and the vertex of the cornea when the eye is in the primary position (DIN ISO 13666:2019, section 3.2.40), where the primary position is the position of the eye when looking in the principal direction (DIN ISO 13666:2019, section 3.2.26). Typical values of the vertex distance lie within the range of 5 mm to 30 mm.

[0040] In the present invention, the term "zone" in the context of an eyeglass lens is used to denote a part of the eyeglass lens that represents an area of the eyeglass lens smaller than the total area of the eyeglass lens.

[0041] The term "clear vision area" in the context of the present invention refers to the area of the spectacle lens that is configured to provide clear vision to the wearer. Additionally, the clear vision area is designed to achieve a focused image on the fovea of the wearer's eye with the help of accommodation when necessary. The term "fovea" refers to the fovea centralis, which is the central depression of the retina with densely packed photoreceptor cells. The clear vision area represents an area with a dioptric power, which is preferably based on a prescription for correcting refractive abnormalities of the eye. The clear vision area should neither provide myopic defocus nor central foveal visual smear.

[0042] The term "defocus structure" applies to a structure that provides a dioptric power that exceeds the dioptric power of the clear vision area of the spectacle lens. Typically, the dioptric power of the defocus structure exceeds the dioptric power of the clear vision area by more than 0.25 D, preferably by more than 0.5 D.

[0043] Such a "defocus structure" or such "multiple defocus structures" according to the present invention are arranged along a so-called "structural line". Each defocus structure has a spatial extent along the said structural line and a spatial extent transverse to the said structural line.

[0044] The present invention makes a distinction between "elongated defocus structures" and "compact defocus structures". The term "elongated" for a "defocus structure" means that the spatial extent along the said structural line is at least 2 times the spatial extent transverse to the said structural line. Preferably, the spatial extent of the elongated defocus structure along the said structural line is more than 10 times the spatial extent of the elongated defocus structure transverse to the said structural line. Typically, the spatial extent of the elongated defocus structure covers the entire structural line.

[0045] Typically, the spatial extent of such an elongated defocus structure in the direction transverse to the said structural line is between 2 mm and 7 mm. Preferably, the spatial extent transverse to the said structural line is between 3 mm and 6 mm.

[0046] Specifically with respect to the present invention, such an elongated defocus structure may include a cross-section in the shape of an ellipsoid or a cylinder. Additionally, the defocus structure may include concentric or non-concentric cross-sectional shapes. In the case of an ellipsoidal structure, the structure includes two different axes, namely, the semi-major axis and the semi-minor axis. In the case of a structure with a cylindrical cross-sectional shape, the structure includes a base that includes a circle having a radius (first geometric dimension) and a length transverse to the structural line (second geometric dimension). Typical elongated focusing structures are disclosed, for example, in US2012062836 A1, CN 111103701B and are particularly shown in Figures 14a and 14b of EP 3561578 A1, but they are arranged along a circular line and not along a structural line as defined according to the present invention.

[0047] The term "an elongated defocus structure" refers to at least one elongated defocus structure. In other words, the term "an elongated defocus structure" refers to one or more elongated defocus structures.

[0048] The term "compact" when used for a "defocus structure" means that the spatial extent of the defocus structure along the structure line is substantially equal to the spatial extent of the defocus structure transverse to the structure line. "Substantially equal" means that the spatial extent along the structure line differs from the spatial extent transverse to the structure line by less than a factor of 2.

[0049] The term "a plurality of compact defocus structures" refers to a plurality of structures that provide a dioptric power exceeding the dioptric power of the clear vision area of an ophthalmic lens. In particular with respect to the present invention, such compact defocus structures can include, for example, island regions as described in US2017 / 131567 A1, microlenses as described in US11073704A and EP 3283008A1, small lenses as described in Figure 6b WO 2020 / 014613A1, or refractive bumps or transparent regions having a different refractive index compared to the surrounding ophthalmic lens material as described in, for example, WO 2010 / 075319A2.

[0050] Typically, the spatial extent of such compact defocus structures ranges between 2 mm and 7 mm. Preferably, the spatial extent transverse to the structure line ranges between 3 mm and 6 mm. In the present invention, the maximum geometric dimension of the compact structure is preferably equal to 9 mm. The maximum distance between at least two compact structures is preferably equal to 15.7 mm. The distance between at least two compact structures is measured from the center of gravity of each compact structure.

[0051] The overlapping microlens structure shown in FIG. 1 of WO 2019 / 206569 A1 can be considered a combination of a "compact" defocus structure and an "elongated" defocus structure.

[0052] The plurality of defocus structures includes more than one defocus structure of the type described above, and the plurality of defocus structures forms a non-concentric surrounding shape, with or without gaps between the defocus structures, such as those of the type shown in FIG. 1 of WO 2019 / 206569 A1. In the case of the non-concentric surrounding shape, each of the defocus structures can provide the same dioptric power. Alternatively, the defocus structures can be differentiated in terms of dioptric power.

[0053] The term "diffusion structure" refers to any structure that provides diffusion characteristics to a corresponding area of an ophthalmic lens. The diffusion structure constitutes an optical element made of any material that diffuses or scatters light in such a way as to transmit soft light. In particular with respect to the present invention, the diffusion structures each change the average transmission contrast of the wearer. Typical diffusion structures are disclosed, for example, in WO 2010 / 075319A2 as indentations on the surface of an ophthalmic lens or translucent inclusions in the ophthalmic lens material. The sizes of such a compact structure along the structure line and transverse to the structure line typically range between 0.8 mm and 3 mm. The spatial extent along the structure line and the spatial extent transverse to the structure line can be the same or different, similar to defocus structures.

[0054] In addition, the diffusion structure can include continuous shapes, such as concentric or non-concentric shapes. In particular, the diffusion structure can be elongated along the structure line. A diffuser of this elongated structure line type is disclosed, for example, in WO 2022 / 112534 A1 and is referred to as a "contact line forming an annular diffuser".

[0055] The term "an elongated diffusion structure" refers to at least one elongated diffusion structure. In other words, the term "an elongated diffusion structure" refers to one or more elongated defocus structures.

[0056] In the context of the present invention, the term "transmission contrast" describes the ratio of the contrast of an object image to the contrast of the corresponding object. In the context of the present invention, the term "average transmission contrast" describes the average transmission contrast of a plurality of diffusion structures of an optical element. If the wearer views through a clear vision area with an "average transmission contrast" of 1.0, the wearer will recognize every detail of the observed object. If the wearer views through a diffusion structure with an "average transmission contrast" of 0.9, the wearer will recognize fewer details (90% in this case) of the observed object compared to when the wearer views through a clear vision area with an "average transmission contrast" of 1.0. In this example, the average transmission contrast is reduced. If the structure line has three different diffusion structures with three different transmission contrasts of 0.2, 0.7, and 0.9, then in the context of the present invention, the average transmission contrast of the structure line will be the arithmetic mean of these three different transmission contrasts. In this case, the average transmission contrast of the structure line is 0.6.

[0057] The term "a plurality of compact diffusion structures" refers to a plurality of structures that provide diffusion characteristics to a corresponding area of an ophthalmic lens. In particular with respect to the present invention, the diffusion structures each change the average transmission contrast of the wearer. In addition, the plurality of diffusion structures includes more than one diffusion structure, and the plurality of diffusion structures form a non-concentric surrounding shape with gaps between the diffusion structures.

[0058] The term "visual performance index" refers to the refractive power error with the same value of an ophthalmic lens. The term "refractive power" represents a general term and includes the dioptric power and the prism power of an ophthalmic lens (DIN ISO 10 13666:2019, section 3.10.13). As generally used, the term "dioptric power" is the sum of the spherical vertex power of an ophthalmic lens (which brings a paraxial parallel light beam to a single focus and which is usually considered in a prescription by the "spherical" value or the abbreviation "sph") and the cylindrical vertex power (which brings a paraxial parallel light beam to two separate focal lines that are perpendicular to each other (DIN ISO 13666:2019, section 3.10.2), and which is usually considered in a prescription by the "cylindrical" value or the abbreviation "cyl"). "Vertex power" is the reciprocal of the paraxial vertex focal length (DIN ISO 13666:2019, section 3.10.7). The term "prescription" means a summary that prescribes the refractive powers required for correcting a diagnosed refractive error in the form of appropriate values. In the case of spherical power, the prescription may include the "sph" value of the sphere. In the case of astigmatic power, the prescription may include the "cyl" value of the cylinder and the "axis" value of the axis, and in the case of prism power, the prescription may include the prism value and the base curve value. In addition, the prescription may include other values, such as the "add (add power)" value in the case of a multifocal ophthalmic lens, and the "add" value specifies the difference between the vertex power of the near vision part of the ophthalmic lens and the vertex power of the far vision part of the ophthalmic lens.

[0059] In the present invention, an "isoline" means a non-visual line or non-visual points connected by non-visual lines on the surface of an ophthalmic lens, which have the same specific refractive power error value. The non-visual line or the connected non-visual points represent the contour line of a certain specific refractive power error and a certain value.

[0060] In the present invention, the term "structural line" refers to a non-visual line that is congruent with the isoline or is at a predefined constant distance from the isoline. In other words, the structural line is at a constant distance from the contour line of a certain specific refractive power and a certain value. The predefined constant distance includes positive or negative values. In the case of a positive value, the structural line is placed farther from the center point of the lens compared to the equal visual performance index and / or the isoline. In other words, the structural line is placed outside the area of the equal visual performance index and / or the isoline. In the case of a negative value, the structural line is placed closer to the center point of the lens compared to the equal visual performance index and / or the isoline.

[0061] The term "along" refers to a defined position of one of the following structures on a structural line or another line: (i) an elongated defocus structure, or (ii) multiple compact defocus structures, or (iii) an elongated diffuser structure, or (iv) multiple compact diffuser structures. The defined position of the structure along the structural line or another line may be the defined center of gravity of the structure. In other words, the center of gravity must be positioned on the structural line with a deviation within ±250 μm. The term "center of gravity" refers to the center of mass of the structure placed on the structural line or another line. Alternatively, the geometric center of the structure may be placed on the structural line or another line. In another alternative, the position of the structure including additional dioptric power may be placed on the structural line or another line. In other words, the term "along" defines which part of the structure must be placed at the structural line or another line. All other parts of the structure may be positioned next to the structural line or another line.

[0062] The value of the predefined constant distance includes at least the maximum extension size of the defocus structure or diffuser structure. If, for example, three different sizes of defocus structures or diffuser structures (e.g., 0.5 mm, 1 mm, and 1.5 mm) should be placed on the structural line, then the minimum value of the predefined constant distance is 1.5 mm. In this way, the defocus structure or diffuser structure will not cover the visual performance metrics, so the visual performance metrics remain measurable.

[0063] The data set of the present invention enables the manufacture of myopia control spectacle lenses with customized myopia control functions based on the diopter of the spectacle lenses and the prescription of the wearer. In addition, the position of the myopia retardation structure on the spectacle lens is optimized by using isolines that already include visual performance errors. Therefore, the position of the myopia retardation structure is selected, otherwise it is impossible to provide the wearer with the desired correction function as required by the prescription. Therefore, a well-balanced myopia control function is achieved.

[0064] The problems detailed above are completely solved by the data set already described above with reference to the first aspect of the present invention.

[0065] In a particularly preferred embodiment, the data set is characterized in that:

[0066] - at least one feature selected from the group consisting of is arranged on a closed line:

[0067] (i) an elongated defocus structure,

[0068] (ii) multiple compact defocus structures,

[0069] (iii) an elongated diffuser structure, and

[0070] (iv) multiple compact diffuser structures,

[0071] or

[0072] - The structural line is a closed line.

[0073] The term "closed line" defines a line that has no distinct starting point or distinct ending point. The closed line can include non-concentric shapes or any other shape that encloses a region.

[0074] The data set of the present invention enables the manufacture of myopia control spectacle lenses with customized myopia control functions based on the diopter of the spectacle lens and the prescription of the wearer. In addition, in the case where the structural line is a closed line, the advantage is that the myopia control function is achieved in every possible line of sight direction of the wearer.

[0075] In a particularly preferred embodiment of the data set of the present invention, the visual performance indicators of the spectacle lens represent at least one selected from the group consisting of:

[0076] - Spherical error,

[0077] - Residual astigmatism,

[0078] - RMS blur,

[0079] - Visual acuity.

[0080] The term "spherical error" refers to the difference between the spherical power of the spectacle lens and the spherical power of the wearer's prescription. In other words, at each point on the spectacle lens where the spherical power of the spectacle lens does not correspond to the spherical power of the wearer's prescription, there is a spherical error. If the prescription contains a spherical power value of 2.0 D, but a spherical power value of 2.5 D is measured at a certain position on the lens, then the spherical error at this position is equal to 0.5 D.

[0081] The term "residual astigmatism" refers to the difference between the astigmatic power of the spectacle lens and the astigmatic power of the wearer's prescription. In other words, at each point on the spectacle lens where the astigmatic power of the spectacle lens does not correspond to the astigmatic power of the wearer's prescription, there is a residual astigmatism. If the prescription contains an astigmatic power value of 2.0 D, but an astigmatic value of 2.5 D is measured at a certain position on the lens, then the residual astigmatism at this position is equal to 0.5 D.

[0082] In the context of this specification, the term "RMS blur" refers to the physiological blur experienced by the wearer of the spectacle lens due to the mean squared spherical error (SphErr) and the mean squared astigmatic error (AstErr) added together with appropriate weights A, B, to reflect the way in which the human visual system integrates this optical error. An example of calculating RMS blur is RMS = Sqrt(SphErr 2 +(AstErr / 2) 2 ), where the weight of the spherical error is 1 and the weight of the astigmatic error is 1 / 2.

[0083] The term "visual acuity" refers to the spatial resolution ability of the wearer's visual system. Visual acuity represents the angular size of the smallest target that a person can just resolve, but there are several different ways for clinicians to specify this angular measure. One way is by the logarithm of the minimum angle of resolution (logMAR). 10 The logarithm of MAR is the common logarithm of MAR. When visual acuity is 20 / 20 (or 6 / 6), MAR is equal to 1 minute of arc (minarc), so log MAR is equal to log 10 (1.0), which is equal to 0.0. For 20 / 40 (or 6 / 12), MAR is 2 minutes of arc, so logMAR is equal to log 10 (2.0), which is equal to 0.30. When the visual acuity score is better than 20 / 20 (or 6 / 6), the logMAR value becomes negative. For example, for 20 / 16 (or 6 / 4.8), MAR is equal to 0.8 minute of arc, so log 10 (0.8) is equal to -0.10. For a visual acuity chart with a size progression ratio of 0.1 logarithmic units and five letters per row, each letter can be assigned a value of 0.02 on the logMAR scale. Additional examples of the term "visual acuity" are shown in the literature "BORISH'S CLINICAL REFRACTION, SECOND EDITION, 2006, Butterworth-Heinemann, pages 217 to 246".

[0084] If the visual performance metric is represented by spherical error or visual acuity, an advantage of this further advantageous embodiment of the data set is that the region of the spectacle lens that only partially meets the prescription requirements is the basis for the myopia control function of a single vision lens or a progressive multifocal lens. If the visual performance metric is represented by residual astigmatism or RMS blur, an advantage of this further advantageous embodiment of the data set is that the region of the spectacle lens that only partially meets the prescription requirements is the basis for the myopia control function of a progressive multifocal lens.

[0085] In addition, the spectacle lens includes a customized and well-balanced distribution between the clear vision area of the lens and the defocus structure and / or diffused structure. Thus, the myopia control function and wearing comfort for the wearer are significantly enhanced.

[0086] In a particularly preferred embodiment of the data set of the present invention, the predefined contour line includes at least one value in one of the ranges selected from the group consisting of:

[0087] - For the visual performance index representing spherical aberration error, from 0.25D to 5.0D,

[0088] - For the visual performance index representing residual astigmatism, from 0.50D to 4.0D,

[0089] - For the visual performance index representing residual RMS blur, from 0.50D to 4.0D,

[0090] - For the visual performance index representing visual acuity, from logMAR 0.1 to logMAR 1.0.

[0091] The advantages of the ranges of the visual performance indices indicated above are that these ranges enable the spectacle lens to have different myopia control zones. In other words, a low-intensity myopia control function and a high-intensity myopia control function can be achieved.

[0092] In a particularly preferred embodiment of the numerical data set of the present invention, the (i) one elongated defocus structure, and / or the (ii) plurality of compact defocus structures, and / or the (iii) one elongated diffusion structure, and / or the (iv) plurality of compact diffusion structures have at least one occupancy factor value along the structure line, and the range group of the at least one occupancy factor value is as follows:

[0093] - 21% to 40% of the structure line (105, 205, 305, 405, 505, 605), which is for at least one visual performance index having at least one of the following range groups:

[0094] ○ For the visual performance index as spherical aberration error (101, 601), from 0.25D to 2.0D,

[0095] ○ For the visual performance index as residual astigmatism (101, 601), from 0.50D to 1.0D,

[0096] ○ For the visual performance index as RMS blur (101, 601), from 0.50D to 1.0D,

[0097] ○ For the visual performance index as visual acuity (101, 601), from logMAR 0.1 to logMAR 0.3,

[0098] - 41% to 60% of the structure line (105, 205, 305, 405, 505, 605), which is for at least one visual performance index having at least one of the following range groups:

[0099] ○ For the visual performance index as spherical aberration error (101, 601), from 2.1D to 3.0D,

[0100] ○ For visual performance metrics (101, 601) as residual astigmatism, 1.1D to 2.0D,

[0101] ○ For visual performance metrics (101, 601) as RMS blur, 1.10D to 2.0D,

[0102] ○ For visual performance metrics (101, 601) as visual acuity, logMAR 0.31 to logMAR 0.5,

[0103] - 61% to 80% of the said structural lines (105, 205, 305, 405, 505, 605), which is for at least one visual performance metric having at least one range in the following range groups:

[0104] ○ For visual performance metrics (101, 601) as spherical error, 3.1D to 4.0D,

[0105] ○ For visual performance metrics (101, 601) as residual astigmatism, 2.1D to 3.0D,

[0106] ○ For visual performance metrics (101, 601) as RMS blur, 2.10D to 3.0D,

[0107] ○ For visual performance metrics (101, 601) as visual acuity, logMAR 0.51 to logMAR 0.7,

[0108] - 81% to 100% of the said structural lines (105, 205, 305, 405, 505, 605), which is for at least one visual performance metric having at least one range in the following range groups:

[0109] ○ For visual performance metrics (101, 601) as spherical error, 4.1D to 5.0D,

[0110] ○ For visual performance metrics (101, 601) as residual astigmatism, 3.1D to 4.0D,

[0111] ○ For visual performance metrics (101, 601) as RMS blur, 3.10D to 4.0D,

[0112] ○ For visual performance metrics (101, 601) as visual acuity, logMAR 0.71 to logMAR 1.0.

[0113] The term "occupation factor" refers to the part of the structural line covered by the defocused structure and / or the diffused structure. If the line length of the structural line is, for example, 5 cm and 4 cm of the structural line is covered by the defocused structure and / or the diffused structure, the occupation factor of this structure is 80%.

[0114] An advantage of this further advantageous embodiment of the data set of the present invention is that, based on the occupation factor, weighting of the myopia control function can be achieved. If equal visual performance metrics (such as spherical aberration) only include errors between 0.25 D and 2.0 D, an occupation factor between 21% and 40% will be used. Therefore, partial prescription correction will be obtained and low-intensity myopia function control will be triggered. If equal visual performance metrics (such as spherical aberration) include errors between 4.1 D and 5.0 D, an occupation factor between 81% and 100% will be used. Therefore, prescription correction will be suppressed and high-intensity myopia control function will be triggered. Additionally, the spectacle lens includes a well-balanced distribution between the clear vision area of the spectacle lens and the defocused structure and / or the diffused structure.

[0115] In a particularly preferred embodiment of the data set of the present invention, the (i) one elongated defocused structure, and / or the (ii) plurality of compact defocused structures, and / or the (iii) elongated diffused structure, and / or the (iv) plurality of compact diffused structures include a discontinuous shape.

[0116] The term "discontinuous shape" refers to a non-continuous and non-connected arrangement of the (i) one elongated defocused structure, and / or the (ii) plurality of compact defocused structures, and / or the (iii) elongated diffused structure, and / or the (iv) plurality of compact diffused structures. In the case of the (ii) plurality of compact defocused structures and the (iv) plurality of compact diffused structures, any single structure may not be in contact with the adjacent structure. In other words, according to this particularly preferred embodiment, the separated structures are separated from any other structure.

[0117] An advantage of this further advantageous embodiment of the data set is that the spectacle lens includes a structure only at the part of the structural line through which the wearer of the spectacle lens typically looks. This enables the myopia control function to be generated only at the required part of the spectacle lens. Therefore, the number of required structures is reduced while not reducing the effectiveness of the myopia control function.

[0118] In a particularly preferred embodiment of the numerical data set of the present invention, the (ii) plurality of compact defocused structures and / or the (iv) plurality of compact diffused structures include at least one structural distribution function along the structural line, and the at least one structural distribution function is selected from the group consisting of:

[0119] - Linear structural distribution function,

[0120] - Normal structure distribution function.

[0121] In the case of a non - continuous and non - connected arrangement of (ii) a plurality of compact defocus structures and / or (iv) a plurality of compact diffused structures, the term "structure distribution" refers to the "discontinuous structure". The "structure distribution" defines how (ii) a plurality of compact defocus structures and / or (iv) a plurality of compact diffused structures are distributed along the structure line.

[0122] In the case of a "linear structure distribution function", (ii) a plurality of compact defocus structures and / or (iv) a plurality of compact diffused structures are equidistantly distributed from each other. For example: If the structure line has a finite length n and four focusing structures are placed on the structure line with a "linear structure distribution function", the distance between the focusing structures is n / 4 in the case of a non - closed structure line and n / 3 in the case of a closed structure line. The advantage of this further advantageous embodiment of the data set is that, based on the linear structure distribution function, an equal myopia control function is achieved along the structure line.

[0123] In the case of a "normal structure distribution function", (ii) a plurality of compact defocus structures and / or (iv) a plurality of compact diffused structures are normally distributed from each other. The normal distribution function is also known as the "bell curve". The mean of the normal distribution function can be placed at each point of the structure line. In an advantageous embodiment, the mean of the normal distribution function is placed at the point on the structure line where enhanced defocus or scattering should be achieved. For example: If a non - circular structure line has a finite length n and ten focusing structures, and the mean of the normal distribution function is located in the middle of the non - circular structure line, then most of the focusing structures are placed in the middle of the non - circular structure line, while a few are placed at the end of the non - circular structure line or towards the end of the non - circular structure line. The advantage of this further advantageous embodiment of the data set of the present invention is that, based on the normal structure distribution function, a central point of the myopia control function can be achieved. In other words, the myopia control function along the structure line is weighted based on the normal structure distribution function.

[0124] In a particularly preferred embodiment of the data set of the present invention, the (i) one elongated defocus structure, and / or the (ii) plurality of compact defocus structures, and / or the (iii) elongated diffused structure, and / or the (iv) plurality of compact diffused structures are configured to induce at least one of the group consisting of:

[0125] - In the case of the (i) one elongated defocus structure and / or the (ii) plurality of compact defocus structures, an additional optical power of 0.25 D to 12.0 D,

[0126] - In the case of the (iii) elongated diffusing structure and / or the (iv) plurality of compact diffusing structures, an optical transfer function of 0.1 to 0.5.

[0127] The advantage of additional optical power is that the induced defocus can be adjusted based on the position and size of the defocus structure. The advantage of the optical transfer function is that the induced reduced contrast can be adjusted based on the position and size of the diffusing structure.

[0128] A method configured to manufacture spectacle lenses for a predefined wearer, the method being based on the data set.

[0129] In a second aspect, the invention relates to a method for computer-implemented calculation of a digital twin of spectacle lenses for a predefined wearer based on a digital twin of an initial spectacle lens, in order to use the digital twin to manufacture spectacle lenses, the initial spectacle lens being configured to be positioned at a predefined wearing position according to section 3.2.36 of ISO 13666:2019(E) in front of the eyes of the predefined wearer, the initial spectacle lens comprising:

[0130] - A clear vision area,

[0131] - The clear vision area provides one or more isoclines along which a visual performance metric has a constant value, whereby the visual performance metric characterizes the visual performance of the initial spectacle lens in the clear vision area for the wearer wearing the initial spectacle lens at the predefined wearing position in front of the eyes.

[0132] The method of the invention describes the following method steps: arranging at least one of the group consisting of: (i) an elongated defocus structure, and / or (ii) a plurality of compact defocus structures, and / or (iii) an elongated diffusing structure, and / or (iv) a plurality of compact diffusing structures, along a structural line corresponding to a predefined isocline among the one or more isoclines or along a structural line at a predefined constant distance from the predefined isocline, the visual performance metric having the constant value along the one or more isoclines.

[0133] The term "digital twin of the initial spectacle lens" refers to the initial data used by the lens designer before calculating the desired spectacle lens design. In other words, the term "digital twin of the initial spectacle lens" represents the starting point of a computer-implemented method for calculating the digital twin of a spectacle lens.

[0134] The problems detailed above are fully solved by the method described above with reference to the second aspect of the invention.

[0135] The method is further configured to manufacture the ophthalmic lens based on the calculated digital twin.

[0136] A method for computer-implemented calculation of a digital twin of an ophthalmic lens for a predefined wearer enables the calculation of a myopia control ophthalmic lens with customized myopia control function based on the diopter of the ophthalmic lens and the prescription of the wearer. In addition, the ophthalmic lens includes a customized and well-balanced distribution between the clear vision area of the lens and the defocus structure and / or diffusing structure. Therefore, the myopia control function and wearing comfort for the wearer are significantly enhanced.

[0137] A computer program according to a method for computer-implemented calculation of a digital twin of an ophthalmic lens, the computer program including instructions which, when executed by a computer, cause the computer to perform the method for computer-implemented calculation of a digital twin of an ophthalmic lens.

[0138] In a third aspect, the invention relates to a kit comprising a) an ophthalmic lens configured for a predefined wearer; and b) information on a predefined wearing position according to section 3.2.36 of ISO 13666:2019(E) in front of the wearer's eye of the ophthalmic lens, said a) ophthalmic lens comprising:

[0139] - a clear vision area, and

[0140] - at least one of the group consisting of: (i) an elongated focusing structure, and / or (ii) a plurality of compact focusing structures, and / or (iii) an elongated diffusing structure, and / or (iv) a plurality of compact diffusing structures.

[0141] The kit of the invention comprises: said (a) ophthalmic lens which is defined such that said (i) an elongated focusing structure, and / or said (ii) a plurality of compact focusing structures, and / or said (iii) an elongated diffusing structure, or said (iv) a plurality of diffusing structures are arranged along a structural line that has no point symmetry and no axial symmetry and is at a predefined constant distance from a predefined isoline, and a visual performance index has a constant value along the predefined isoline, the visual performance index characterizing the visual performance of the ophthalmic lens in the clear vision area for the wearer wearing the ophthalmic lens at the predefined wearing position in front of the eye.

[0142] The problems detailed above are fully solved by the kit described above with reference to the third aspect of the invention.

[0143] In another preferred embodiment, the kit is characterized in that the information is stored on a computer-readable medium or implemented as a data signal.

[0144] The kit of the present invention enables the positioning of spectacle lenses in a predefined spectacle frame of a wearer. The spectacle lenses include myopia control with a myopia control function customized based on the diopter of the spectacle lenses and the prescription of the wearer. In addition, the spectacle lenses include a customized and well-balanced distribution between the clear vision area of the lenses and the defocus structure and / or diffuser structure. Therefore, the myopia control function and wearing comfort for the wearer are significantly enhanced.

[0145] The present invention will be described exemplarily below with reference to the accompanying drawings.

[0146] FIG. 1 shows an isogram of a single vision spectacle lens according to a first embodiment of the present invention, the single vision spectacle lens including visual performance indicators, predefined isograms, and structure lines of a dataset describing the single vision spectacle lens.

[0147] Figure 2 An isogram of a single vision spectacle lens according to a second embodiment of the present invention is shown, the single vision spectacle lens including an elongated defocus structure along the structure line of a dataset describing the single vision spectacle lens.

[0148] Figure 3 An isogram of a single vision spectacle lens according to a third embodiment of the present invention is shown, the single vision spectacle lens including a plurality of compact defocus structures along the structure line of a dataset describing the single vision spectacle lens.

[0149] Figure 4 An isogram of a single vision spectacle lens according to a fourth embodiment of the present invention is shown, the single vision spectacle lens including an elongated diffuser structure along the structure line of a dataset describing the single vision spectacle lens.

[0150] Figure 5 An isogram of a single vision spectacle lens according to a fifth embodiment of the present invention is shown, the single vision spectacle lens including a plurality of compact diffuser structures along the structure line of a dataset describing the single vision spectacle lens.

[0151] FIG. 6 shows an isogram of a progressive multifocal spectacle lens according to a sixth embodiment of the present invention, the progressive multifocal spectacle lens including visual performance indicators, predefined isograms, a predefined constant distance, structure lines, and a plurality of compact defocus structures along the structure lines of a dataset describing the progressive multifocal lens.

[0152] A first exemplary embodiment of the present invention is described with reference to FIG. 1. FIG. 1 is subdivided into Figures 1a) to 1c) . Figure 1a)Shows an example of the visual performance metric 101 of the dataset describing the single vision spectacle lens 100. This first embodiment includes seven points on the single vision spectacle lens 100, and the values of the visual performance metric 101 at these seven points are equal. In this exemplary embodiment, the visual performance metric 101 is represented by a logMAR chart with a constant value of logMAR = 0.9, and this constant value corresponds to a significant reduction in visual acuity compared to the standard visual acuity of logMAR = 0.0.

[0153] Based on the seven points where the values of the visual performance metric 101 are equal, an isocontour 103 is predefined, and this isocontour connects the seven points where the values of the visual performance metric 101 are equal. In this first exemplary embodiment, the predefined isocontour 103 is a closed line. Due to the closed nature of the predefined isocontour 103, a first clear vision area 109-1 is generated within the predefined isocontour 103, and a second clear vision area 109-2 is generated outside the predefined isocontour 103.

[0154] Based on Figure 1a ) of Figure 1b ) Also shows a structural line 105. In this first variant of the first exemplary embodiment, the structural line 105 is congruent with the predefined isocontour 103. Therefore, there is no predefined constant distance between the predefined isocontour 103 and the structural line 105. For demonstration purposes, an isocontour 103 similar to the isocontour 103 of Figure 1a ) is represented by a white dashed line in Figure 1b ).

[0155] Based on Figure 1a ) of Figure 1c ) Also shows a structural line 105 and a predefined constant distance 107. In this second variant of the first exemplary embodiment, the structural line 105 is not congruent with the predefined isocontour 103. Instead, the structural line 105 is at a predefined constant distance 107 of +2 mm from the predefined isocontour 103. The positive sign of the predefined constant distance 107 means that the structural line 105 is arranged outside the isocontour 103. The negative sign of the predefined constant distance 107 means that the structural line 105 is arranged inside the isocontour 103.

[0156] Refer to Figure 2 Describes a second exemplary embodiment of the present invention. Figure 2 Shows an example of an elongated defocus structure 211 along a structural line 205 of the dataset describing the single vision spectacle lens 200.

[0157] In this second embodiment, three elongated defocus structures 211-1, 211-2, and 211-3 are arranged along three structural lines 205-1, 205-2, and 205-3. In this second exemplary embodiment, the three structural lines 205-1, 205-2, and 205-3 are congruent with three predefined isocontours. For illustrative purposes, Figure 2 these three predefined isocontours are not shown in, but the correlation between these three predefined isocontours and the three structural lines 205-1, 205-2, and 205-3 is similar to that of Figure 1b ). Therefore, there is no predefined constant distance between the three predefined isocontours and the three structural lines 205-1, 205-2, and 205-3.

[0158] In this second exemplary embodiment, the three predefined isocontours and the three structural lines 205-1, 205-2, and 205-3 are represented by closed lines. Due to the closed nature of the three structural lines 205-1, 205-2, and 205-3, three clear vision regions 209-1, 209-2, and 209-3 are generated within the corresponding three structural lines 205-1, 205-2, and 205-3. Additionally, a fourth clear vision region 209-4 is generated outside the structural line 205-3.

[0159] In this second embodiment, the three elongated defocus structures 211-1, 211-2, and 211-3 are non-concentric cylindrical rings. The elongated defocus structures 211-1, 211-2, and 211-3 are arranged along the three closed structural lines 205-1, 205-2, and 205-3. The additional optical power of the three elongated defocus structures 211-1, 211-2, and 211-3 is 2D. Therefore, due to the elongated defocus structure 211, a defocus of 2D is generated along the corresponding structural line 205. In addition, the three elongated defocus structures 211-1, 211-2, and 211-3 have a width 213. In this exemplary embodiment, the widths 213-1, 213-2, and 213-3 are all equal to 2 mm. In other embodiments, for each elongated defocus structure 211, the optical power and the width 213 of the elongated defocus structure 211 can be different.

[0160] Reference Figure 3 describes a third exemplary embodiment of the present invention. Figure 3 An example of a plurality of compact defocus structures 312 along a structural line 305 describing a dataset of a single vision spectacle lens 300 is shown.

[0161] In this third embodiment, a plurality of compact defocus structures 312-1, 312-2, 312-3 are arranged along three structural lines 305-1, 305-2, 305-3. In this third exemplary embodiment, the three structural lines 305-1, 305-2, 305-3 are congruent with three predefined isocontours. For illustrative purposes, Figure 3 these three predefined isocontours are not shown in, but the correlation between these three predefined isocontours and the three structural lines 305-1, 305-2, 305-3 is similar to that of Figure 1b ). Therefore, there is no predefined constant distance between the three predefined isocontours and the three structural lines 305-1, 305-2, 305-3.

[0162] In this third exemplary embodiment, the three predefined isocontours and the three structural lines 305-1, 305-2, 305-3 are represented by closed lines. Due to the closed nature of the three structural lines 305-1, 305-2, 305-3, three clear vision areas 309-1, 309-2, 309-3 are generated within the corresponding three structural lines 305-1, 305-2, 305-3. Additionally, a fourth clear vision area 309-4 is generated outside the structural line 305-3.

[0163] In this third embodiment, the plurality of compact defocus structures 312-1, 312-2, 312-3 are small lenses. These small lenses are arranged along three closed structural lines 305-1, 305-2, 305-3. The additional optical power of the plurality of compact defocus structures 312-1, 312-2, 312-3 is 3D. Therefore, due to the plurality of compact defocus structures 312, a plurality of 3D defocuses are generated along the corresponding structural lines 305. Additionally, the plurality of compact defocus structures 312-1, 312-2, 312-3 have a width 313. In this exemplary embodiment, the widths 313-1, 313-2, 313-3 are all equal to 1 mm. In other embodiments, for each individual defocus structure 312, the optical power and width 313 of the plurality of compact defocus structures 312 can be different.

[0164] The distance between each compact defocus structure 312 along the structural line 305 is equal to 0.25 mm. In other embodiments, the distance between each compact defocus structure 312 can vary within the corresponding structural line 305 and / or can vary between two or more of the structural lines 305-1, 305-2, 305-3.

[0165] Reference Figure 4 describes a fourth exemplary embodiment of the present invention. Figure 4 An example of an elongated diffusive structure 413 along a structural line 405 describing a dataset of a single vision spectacle lens 400 is shown.

[0166] In this fourth embodiment, three elongated diffusing structures 413-1, 413-2, 413-3 are arranged along three structural lines 405-1, 405-2, 405-3. In this fourth exemplary embodiment, the three structural lines 405-1, 405-2, 405-3 are congruent with three predefined isolines. For illustrative purposes, Figure 4 these three predefined isolines are not shown, but the correlation between these three predefined isolines and the three structural lines 405-1, 405-2, 405-3 is similar to that of Figure 1b ) example. Thus, there is no predefined constant distance between the three predefined isolines and the three structural lines 405-1, 405-2, 405-3.

[0167] In this fourth exemplary embodiment, the three predefined isolines and the three structural lines 405-1, 405-2, 405-3 are represented by closed lines. Due to the closed nature of the three structural lines 405-1, 405-2, 405-3, three clear viewing areas 409-1, 409-2, 409-3 are generated within the corresponding three structural lines 405-1, 405-2, 405-3. Additionally, a fourth clear viewing area 409-4 is generated outside the structural line 405-3.

[0168] In this fourth embodiment, the three elongated diffusing structures 413-1, 413-2, 413-3 are all made of opal glass and are arranged along the three closed structural lines 405-1, 405-2, 405-3. The average transmission contrast of the three elongated diffusing structures 413-1, 413-2, 413-3 is 0.8. Thus, due to the elongated diffusing structure 211, the wearer will recognize fewer details (80% in this case) of the observed object compared to when the wearer looks through one of the clear viewing areas 409-1, 409-2, 409-3, 409-4. In other embodiments, for each elongated diffusing structure 413, the average transmission contrast of the elongated diffusing structure 413 can be different.

[0169] Reference Figure 5 describes a fifth exemplary embodiment of the present invention. Figure 5 An example of a plurality of compact diffusing structures 514 along a structural line 505 describing a dataset of a single vision spectacle lens 500 is shown.

[0170] In this fifth embodiment, a plurality of compact diffusing structures 514-1, 514-2, 514-3 are made of opal glass and are arranged along three structural lines 505-1, 505-2, 505-3. In this fifth exemplary embodiment, the three structural lines 505-1, 505-2, 505-3 are congruent with three predefined isolines. For illustrative purposes, Figure 5These three predefined contour lines are not shown, but the correlation between these three predefined contour lines and the three structural lines 505-1, 505-2, 505-3 is similar to that of Figure 1b ) example. Therefore, there is no predefined constant distance between the three predefined contour lines and the three structural lines 505-1, 505-2, 505-3.

[0171] In this fifth exemplary embodiment, the three predefined contour lines and the three structural lines 505-1, 505-2, 505-3 are represented by closed lines. Due to the closed nature of the three structural lines 505-1, 505-2, 505-3, three clear viewing areas 509-1, 509-2, 509-3 are generated within the corresponding three structural lines 505-1, 505-2, 505-3. Additionally, a fourth clear viewing area 509-4 is generated outside the structural line 505-3.

[0172] A plurality of compact diffusing structures 514-1, 514-2, 514-3 are arranged along the three closed structural lines 505-1, 505-2, 505-3. The average transfer contrast of the plurality of compact diffusing structures 514-1, 514-2, 514-3 is 0.7. Therefore, due to the compact diffusing structure 514, the wearer will recognize fewer details (70% in this case) of the observed object compared to when the wearer looks through one of the clear viewing areas 509-1, 509-2, 509-3, 509-4. In other embodiments, for each compact diffusing structure 514, the average transfer contrast of the compact diffusing structure 514 can be different.

[0173] The distance between each compact diffusing structure 514 along the structural line 505 is equal to 0.3 mm. In other embodiments, the distance between each compact diffusing structure 514 can vary within the corresponding structural line 505 and / or can vary between two or more of the structural lines 505-1, 505-2, 505-3.

[0174] A sixth exemplary embodiment of the present invention is described with reference to FIG. 6. FIG. 6 is subdivided into Figures 6a) to 6c) . Figure 6a ) shows an example of the visual performance metric 601 of a dataset describing a progressive multifocal lens (PAL) 600. The visual performance metric 601 In this exemplary embodiment, the visual performance metric 601 is represented by the spherical aberration of the progressive multifocal lens 600. The progressive multifocal lens 600 has four different values of the visual performance metric 601.

[0175] The visual performance index 601-1 has a constant spherical lens error of -0.5D. The visual performance indices 601-2a and 601-2b have a constant spherical lens error of -2.0D. The visual performance index 601-3 has a constant spherical lens error of -1.0D. The visual performance indices 601-4a and 601-4b have a constant spherical lens error of -1.5D.

[0176] Based on the visual performance index 601, contour lines 603 are predefined, and the values of the visual performance index 601 corresponding to the predefined contour lines are equal. Based on Figure 6a ) of Figure 6b ) shows two examples of the predefined contour lines 603. The predefined contour line 603-1 represents the visual performance index 601-1 with a constant spherical lens error of -0.5D. The predefined contour lines 603-2a and 603-2b represent the visual performance indices 601-2a and 601-2b with a constant spherical lens error of -2.0D respectively.

[0177] Figure 6b ) also shows the structural lines 605-1, 605-2a, 605-2b. In this sixth exemplary embodiment, the structural lines 605-1, 605-2a, 605-2b are not congruent with the corresponding predefined contour lines 603-1, 603-2a, 603-2b. Therefore, there is a predefined constant distance 607 between the predefined contour line 603 and the structural line 605, which is available.

[0178] In the case of the predefined contour line 603-1, the value of the predefined constant distance 607-1 is +3mm, thus forming the structural line 605-1. The positive sign of the predefined constant distance 607 means that the structural line 605-1 is arranged above the predefined contour line 603-1. A negative sign of the predefined constant distance 607 will form a structural line 605-1 arranged below the contour line 603-1.

[0179] In the case of the predefined contour lines 603-2a and 603-2b, the values of the predefined constant distances 607-2a and 607-2b are +1mm, thus forming the structural lines 605-2a and 605-2b. The positive signs of the predefined constant distances 607-2a and 607-2b mean that the structural lines 605-2a and 605-2b are arranged above the predefined contour lines 603-2a and 603-2b. Negative signs of the predefined constant distances 607-2a and 607-2b will form structural lines 605-2a and 605-2b arranged below the contour lines 603-2a and 603-2b.

[0180] Based on Figure 6b ) of Figure 6c) shows a plurality of compact defocus structures 612-1, 612-2 represented by small lenses having a circular shape.

[0181] A plurality of compact defocus structures 612-1 are arranged along a structural line 605-1( Figure 6b ). The additional optical power of the plurality of compact defocus structures 612-1 is 2.5 D. Thus, due to the plurality of compact defocus structures 612-1, a plurality of 2.5 D defocuses are generated along the corresponding structural line 605-1. In addition, the plurality of compact defocus structures 612-1 have a width 613-1. In this exemplary embodiment, the width 613-1 of all the compact defocus structures within the plurality of compact defocus structures 612-1 is equal to 2 mm. In other embodiments, for each individual defocus structure within the plurality of compact defocus structures 612, the optical power and the width 613-1 of the plurality of compact defocus structures 612 may be different.

[0182] A plurality of compact defocus structures 612-2a, 612-2b are arranged along the broken structural lines 605-2a and 605-2b( Figure 6b ). The additional optical power of the plurality of compact defocus structures 612-2a, 612-2b is 1.0 D. Thus, due to the plurality of compact defocus structures 612-2a, 612-2b, a plurality of 1.0 D defocuses are generated along the corresponding structural lines 605-2a and 605-2b. In addition, the plurality of compact defocus structures 612-2a, 612-2b have widths 613-2a, 613-2b. In this exemplary embodiment, the width 613-2a or 613-2b of all the compact defocus structures within the plurality of compact defocus structures 612-2a or 612-2b is equal to 1 mm. In other embodiments, for each individual defocus structure within the plurality of compact defocus structures 612-2a, 612-2b, the optical power and the widths 613-2a, 613,2b of the plurality of compact defocus structures 612-2a, 612-2b may be different.

Claims

1. A data set stored on a computer-readable medium or implemented in the form of a computer-readable data signal, the data set comprising at least one of the following types of data: a. A digital twin of an ophthalmic lens (100, 200, 300, 400, 500, 600), the digital twin being configured for use in manufacturing the ophthalmic lens (100, 200, 300, 400, 500, 600), or b. Data containing computer-readable instructions for controlling one or more manufacturing machines to manufacture the ophthalmic lens (100, 200, 300, 400, 500, 600), the ophthalmic lens (100, 200, 300, 400, 500, 600) being configured to be positioned at a predefined wearing position in front of the eyes of a predefined wearer according to section 3.2.36 of ISO 13666:2019(E), the ophthalmic lens (100, 200, 300, 400, 500, 600) comprising: - A clear vision zone (109, 209, 309, 409, 509); - A plurality of compact defocus structures (312, 612); wherein, the plurality of compact defocus structures (312, 612) are arranged along a structure line (105, 205, 305, 405, 505, 605) that is a predefined constant distance (107, 607) from a predefined isocontour (103, 603), and a visual performance metric (101, 601) has a constant value along the predefined isocontour, the visual performance metric (101, 601) characterizing the visual performance of the ophthalmic lens (100, 200, 300, 400, 500, 600) for the wearer wearing the ophthalmic lens (100, 200, 300, 400, 500, 600) at the predefined wearing position in front of the eyes, wherein, the spatial extent of each of the compact defocus structures (312, 612) along the structure line (105, 205, 305, 405, 505, 605) and the spatial extent of the compact defocus structure transverse to the structure line (105, 205, 305, 405, 505, 605) have a ratio of less than 2.

2. The data set according to claim 1, wherein, the plurality of compact defocus structures (312, 612) are arranged on a closed line, or the structure line (105, 205, 305, 405, 505, 605) is a closed line.

3. The data set according to the previous claim, wherein, the visual performance metric (101, 601) represents at least one selected from the group consisting of: - Spherical error, - Residual astigmatism, - RMS blur, - Visual acuity.

4. The data set according to claim 3, wherein, The predefined isocontours (103, 603) include at least one value within one of the ranges selected from the group of ranges consisting of: - For the visual performance metric (101, 601) being the spherical aberration error, from 0.25 D to 5.0 D, - For the visual performance metric (101, 601) being the residual astigmatism, from 0.50 D to 4.0 D, - For the visual performance metric (101, 601) being the RMS blur, from 0.50 D to 4.0 D, - For the visual performance metric (101, 601) being the visual acuity, from logMAR 0.1 to logMAR 1.

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5. The data set according to one of the preceding claims, characterized in that the plurality of compact defocus structures (312, 612) include a discontinuous shape.

6. The data set according to the preceding claim, characterized in that the plurality of compact defocus structures (312, 612) include at least one structural distribution function along the structural lines (105, 205, 305, 405, 505, 605), the at least one structural distribution function being selected from the group consisting of: - Linear structural distribution function, - Normal structural distribution function.

7. The data set according to one of the preceding claims, characterized in that the plurality of compact defocus structures (312, 612) are configured to induce: - An additional optical power from 0.25 D to 12.0 D.

8. A method configured for manufacturing an ophthalmic lens (100, 200, 300, 400, 500, 600) for a predefined wearer, the method being based on the data set according to one of the preceding claims.

9. A method configured for performing a computer-implemented calculation on a digital twin of an ophthalmic lens (100, 200, 300, 400, 500, 600) for a predefined wearer based on a digital twin of an initial ophthalmic lens (100, 200, 300, 400, 500, 600) in order to manufacture the ophthalmic lens (100, 200, 300, 400, 500, 600) using the digital twin, the initial ophthalmic lens being configured for a predefined wearing position according to section 3.2.36 of ISO 13666:2019(E) in front of the eyes of the predefined wearer, the initial ophthalmic lens (100, 200, 300, 400, 500, 600) includes - A clear vision area (109, 209, 309, 409, 509), - The clear vision area (109, 209, 309, 409, 509) provides one or more isoclines (103, 603), along which the visual performance index (101, 601) has a constant value. Thus, the visual performance index (101, 601) characterizes the visual performance of the initial spectacle lens (100, 200, 300, 400, 500, 600) within the clear vision area (109, 209, 309, 409, 509) for the wearer wearing the initial spectacle lens (100, 200, 300, 400, 500, 600) at the predefined wearing position in front of the eyes. Characterized in that, A plurality of compact defocus structures (312, 612) are arranged along a structural line (105, 205, 305, 405, 505, 605) corresponding to a predefined isocline (103, 603) among the one or more isoclines (103, 603), and along a structural line (105, 205, 305, 405, 505, 605) at a predefined constant distance (107, 607) from the predefined isocline (103, 603), wherein the spatial extent of each of the compact defocus structures (312, 612) along the structural line (105, 205, 305, 405, 505, 605) and the spatial extent of the compact defocus structure transverse to the structural line (105, 205, 305, 405, 505, 605) have a ratio less than 2.

10. The method according to claim 9, wherein the method is further configured to manufacture the spectacle lens (100, 200, 300, 400, 500, 600) based on the calculated digital twin.

11. A computer program according to any one of claims 9 to 10, Characterized in that, The computer program includes instructions that, when executed by a computer, cause the computer to perform the method according to claim 9.

12. A kit, the kit Comprising: a) Spectacle lenses (100, 200, 300, 400, 500, 600) configured for a predefined wearer; And b) information on the predefined wearing position according to section 3.2.36 of ISO 13666:2019(E) of the spectacle lenses (100, 200, 300, 400, 500, 600) in front of the wearer's eyes, wherein the a) spectacle lenses (100, 200, 300, 400, 500, 600) include: - A clear vision area (109, 209, 309, 409, 509), and - A plurality of compact focusing structures (312, 612), Characterized in that, The plurality of compact focusing structures (312, 612) are arranged along structural lines (105, 205, 305, 405, 505, 605) that have no point symmetry and no axial symmetry and are at a predefined constant distance (107, 607) from predefined isocontours (103, 603), and visual performance metrics (101, 601) have a constant value along the predefined isocontours. The visual performance metrics (101, 601) characterize the visual performance of the spectacle lenses (100, 200, 300, 400, 500, 600) within the clear vision zones (109, 209, 309, 409, 509) for a wearer wearing the spectacle lenses (100, 200, 300, 400, 500, 600) at the predefined wearing position in front of the eyes, where, the spatial extent of each of the compact defocusing structures (312, 612) along the structural lines (105, 205, 305, 405, 505, 605) and the spatial extent of the compact defocusing structure transverse to the structural lines (105, 205, 305, 405, 505, 605) have a ratio less than 2.

13. The kit according to claim 12, wherein, the information is stored on a computer-readable medium or implemented as a data signal.

14. A data set stored on a computer-readable medium or implemented in the form of a computer-readable data signal, the data set comprising at least one of the following types of data: a. A digital twin of a spectacle lens (100, 200, 300, 400, 500, 600), the digital twin being configured for use in manufacturing the spectacle lens (100, 200, 300, 400, 500, 600), or b. Data containing computer-readable instructions for controlling one or more manufacturing machines to manufacture the spectacle lens (100, 200, 300, 400, 500, 600), the spectacle lens (100, 200, 300, 400, 500, 600) being configured to be positioned at a predefined wearing position according to section 3.2.36 of ISO 13666:2019(E) in front of the eyes of a predefined wearer, the spectacle lens (100, 200, 300, 400, 500, 600) comprising: - a clear vision zone (109, 209, 309, 409, 509); - a plurality of compact defocusing structures (312, 612), wherein, The plurality of compact defocus structures (312, 612) are arranged along a structural line (105, 205, 305, 405, 505, 605) that has no point symmetry and axial symmetry and corresponds to a predefined contour line (103, 603), and a visual performance metric (101, 601) has a constant value along the predefined contour line, where the visual performance metric (101, 601) characterizes the visual performance of the spectacle lenses (100, 200, 300, 400, 500, 600) within the clear vision zone (109, 209, 309, 409, 509) for a wearer wearing the spectacle lenses (100, 200, 300, 400, 500, 600) at the predefined wearing position in front of the eyes; or, the plurality of compact defocus structures are arranged along a structural line (105, 205, 305, 405, 505, 605) that is at a predefined constant distance (107, 607) from the predefined contour line (103, 603), and a visual performance metric (101, 601) has a constant value along the predefined contour line, wherein the spatial extent of each of the compact defocus structures (312, 612) along the structural line (105, 205, 305, 405, 505, 605) and the spatial extent of the compact defocus structure transverse to the structural line (105, 205, 305, 405, 505, 605) have a ratio less than 2, wherein the visual performance metric (101, 601) represents at least one selected from the group consisting of: - spherical error, - residual astigmatism, - RMS blur, which is calculated as: RMS blur = Sqrt(SphErr2+(AstErr / 2)2), - visual acuity.

15. The data set according to claim 14, characterized in that the predefined contour line (103, 603) includes at least one value within one of the ranges selected from the group of ranges consisting of: - for the visual performance metric (101, 601) being spherical error, 0.25D to 5.0D, - for the visual performance metric (101, 601) being residual astigmatism, 0.50D to 4.0D, - for the visual performance metric (101, 601) being RMS blur, 0.50D to 4.0D, - for the visual performance metric (101, 601) being visual acuity, logMAR 0.1 to logMAR 1.

0.

16. The data set according to one of the preceding claims, characterized in that the plurality of compact defocus structures (312, 612) include a discontinuous shape.

17. The data set according to the preceding claim, characterized in that the plurality of compact defocus structures (312, 612) include at least one structural distribution function along the structural line (105, 205, 305, 405, 505, 605), the at least one structural distribution function being selected from the group consisting of: - Linear structure distribution function, - Normal structure distribution function.

18. The data set according to one of the preceding claims, characterized in that the plurality of compact defocus structures (312, 612) are configured to induce an additional optical power of from 0.25 D to 12.0 D.

19. A method configured for manufacturing spectacle lenses (100, 200, 300, 400, 500, 600) for a predefined wearer, the method being based on a data set according to one of the preceding claims.

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