CONTACT LENSES COMPRISING A LENTICULAR IN AN UPPER PORTION OF THE CONTACT LENS.

Abstract

This description describes a contact lens comprising a lenticular in a superior portion of the contact lens, wherein the contact lens is attached to a user's upper eyelid by the interaction of the lenticular with a superior tarsal plate of the user's upper eyelid. This interaction allows the contact lens to be displaced upward when looking downward and maintains rotational stability. In one aspect, the lenticular has a superior surface, said superior surface having a shape selected from the group consisting of flat, flat with rounded corners, concave, convex, or conical shapes having a thicker portion closer to an edge of the contact lens, or combinations thereof. In another aspect, the lenticular comprises a plurality of lenticular sections. In yet another aspect, the lenticular is anatomically shaped.

Description

CONTACT LENSES COMPRISING A LENTICULAR IN AN UPPER PORTION OF THE CONTACT LENS FIELD OF INVENTION This description relates to bifocal, trifocal, or multifocal translation contact lenses used when the cornea is spherical or toric. BACKGROUND OF THE INVENTION The current state of the art in rotational stability includes back surface toricity (effective for rigid gas-permeable contact lenses), base-down prism and periweight, or dynamic stability, which is a modification of the base-down prism. There are patients for whom one or none of the existing designs are sufficient to provide rotational stability for a contact lens. Traditionally, rigid gas permeable (RGP) contact lenses are fitted with an "eyelid coupling" fit by using the naturally thicker edge of a less conformal RGP lens or by adding a less carrier lenticular (a thicker edge) to a more conformal RGP lens. The shape used in conventional RGP lenses was likely a function of what could be manufactured when eyelid coupling was first described in the 1970s. With these conventional lenses, the thicker edge would be located 360° around the periphery of the lens. However, the lens does not need to be that shape to achieve eyelid coupling, and other shapes and designs can provide a better fit that allows the contact lens to shift upward when looking down.The lens's translation when looking down would allow the use of a true bifocal: distance power in the upper and middle portions of the lens, and near power in the lower portion. Additionally, the eyelid coupling adjustment provides rotational stability for toric lenses and other applications. Therefore, the desired outcome is contact lenses that overcome technical challenges, some of which have been described above. SUMMARY OF THE INVENTION This description refers to soft contact lenses with an eyelid-coupled fit. The portion used for eyelid-coupled fitting (i.e., the lenticular portion) is placed only on the upper (superior) surface of the contact lens. With modern manufacturing capabilities, any number of shapes can be implemented to achieve the eyelid-coupled fit. This description relates to translational bifocal, trifocal, or multifocal contact lenses used when the cornea is spherical or toric. For rotational stability, the contact lenses described herein have an advantage over base-down prism lenses. The U104 perilastre design utilizes dynamic stability by employing the interaction between the lenticular aspect described below and the tarsal plate of the upper eyelid to stabilize the contact lens. It can also utilize the interaction between the prism base and the lower eyelid. Interactions between the lens and one or both eyelids provide enhanced stability in the lens design described herein. This same contact lens design also allows for translational movement when the patient shifts their gaze from forward to downward. Instead of pushing the prism base of the contact lens upward with the lower eyelid, as the previous technique attempts, this design pulls the contact lens upward with the upper lenticular aspect.This is because the lenticular surface allows the contact lens to use an "eyelid coupling" fit, where the lens stays with the upper eyelid as the patient looks down. The description below sets forth the details of one or more embodiments of the present description. Other features, objects, and advantages will be evident from the description and from the claims. This application claims priority and benefit from U.S. patent application No. 15 / 274,159 filed September 23, 2016, which claims the benefit of U.S. provisional application No. 62 / 222,376 filed September 23, 2015, both of which are hereby incorporated by reference in their entirety in the following description. The accompanying figures, which are incorporated into and form a part of this specification, illustrate several aspects that are described below. BRIEF DESCRIPTION OF THE FIGURES Figures 1A and 1B are schematic diagrams providing a front (Figure 1A) and side (Figure 1B) view of a bifocal contact lens according to the lens designs described herein. Figures 1A and 1B show a lenticular 101 comprising a less carrier-type lenticular curve located at or near the upper edge of contact lens 100. Figures 1C and 1D are schematic diagrams providing a front view (Figure 1C) and a side view (Figure 1D) of an alternating bifocal contact lens according to the lens designs described herein. Figures 1C and 1D show a lenticular 101 comprising a less carrier-type lenticular curve located more toward the center of the contact lens away from the upper edge of contact lens 100. Figures 2A (front view) and 2B (profile view) are schematic diagrams of a contact lens showing a “push” and “pull” mechanism associated with an upper lenticular and lower prism segment. Figures 3A-3F are schematic profile images of the illustrative contact lens that have various lenticular shapes formed on an upper portion of the contact lens. Figure 4A is an illustrative schematic profile image of the contact lens having an illustrative anatomically shaped lenticular in an upper portion of the contact lens. Figure 4B is a front view of the anatomically shaped lenticular of Figure 4A showing the dimensions of width (w) and height (h). Figure 4C is a front view of a contact lens that has an anatomically shaped lenticular in an upper portion of the contact lens. Figures 5A and 5B are profile images of the eyes illustrating the eyelid coupling fit of the contact lens that has a lenticular in the upper portion of the lens compared to a contact lens that does not have a lenticular. Figures 6A-6J illustrate front views of contact lenses that have non-limiting examples of lenticulars as described in this description. DETAILED DESCRIPTION OF THE INVENTION This description will be further elaborated upon later with reference to specific illustrative examples. In fact, this description can be implemented in many different forms and should not be considered limited to the examples set forth herein. This description describes a contact lens comprising a lenticular element in an upper portion of the lens. For example, the lenticular element may comprise a less carrier-type, rounded lenticular curve on a central upper portion of the lens, although other lenticular locations, designs, and shapes are contemplated. The various contact lens modalities described herein comprise a lenticular design located on the upper surface that creates: (1) rotational stability of the contact lens in all gaze directions, (2) upward translation, or movement, of the contact lens when the eye is looking down, and (3) generally, centered placement of the contact lens over the cornea and pupil as needed as the person's gaze changes. "Upward translation of the contact lens when the eye is looking down" means that the contact lens is held in an upward position when the patient looks down. The modalities described herein include one or more lenticulars located on a top portion of the contact lens, where the lenticular has any shape that would allow any type of contact lens (soft, gas permeable, hybrid, etc.) to be used.) is fixed inside the upper eyelid. With reference to Figures 1A and 1B, a schematic diagram of the front view (Figure 1A) and side view (Figure 1B) of a bifocal contact lens 100 is illustrated, according to the lens designs described herein. The bifocal lens has a distance vision zone 103 and a near vision zone 104. One of the features of the contact lens shown in Figures 1A and 1B is the placement of a lenticular 101 in the central and upper portion of the contact lens. As described herein, the upper portion of the contact lens 100 is called the upper portion, and the lower portion of the contact lens 100 is called the lower portion.Generally, the lenticular 101 is located entirely within the upper portion of the contact lens 100 along a horizontal midline passing through the center of the contact lens 100; however, the ends of one or more of the lenticulars may extend into the lower portion of the contact lens below the horizontal midline. In the embodiment shown in Figures 1A and 1B, the lenticular 101 comprises a less carrier-type, rounded lenticular curve extending in an arc around a portion of the upper edge of the contact lens 100, although other shapes, sizes, and designs of lenticulars 101 are contemplated within the scope of the embodiments of this invention and described herein. Another feature of the design shown in Figures 1A and 1B is the possible use of the prism 102 or a ballast in the lower portion of the contact lens 100.The combined characteristics of contact lens 100 described herein provide rotational, translational, and / or centration stability. The contact lens described herein may be a rigid or soft gas-permeable contact lens design, or a hybrid design, such that the contact lens has a rigid center with soft edges. The lens may be made of a material that can sense light activity or molecules in the ocular environment and contains elements that modulate light or the surrounding ocular environment, such as liquid crystal displays, filters, photochromic materials, compartments containing other materials, or sensors. Although shown in Figures 1A and 1B as a bifocal lens, it will be appreciated that contact lens 100 described herein can be of any vision, including single vision, bifocal, multifocal, and / or toric. In Figures 1A, 1B, 1C, and 1D, lenticular 101 can be seen on top of contact lens 100. Lenticular 101 (in this example, a less carrier-type lenticular curve) can be placed on the top edge of contact lens 100, as seen in Figure 1B, or it can be located some distance from the edge of contact lens 100, as can be seen in Figure 1D. For example, the lenticular lens 101 may be located in the central and upper portion of the contact lens 100. The lenticular lens 101 may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, or 5.0 millimeters, or more, less, or any amount in between, away from the outer edge of the contact lens 100. A prism 102 or ballast may be located in the lower half of the contact lens 100. The use of prisms is described in greater detail in this description. The current state of the art in vision translation is a rigid gas-permeable contact lens. Currently, there are no soft contact lenses that can achieve vision translation. All prior art in soft contact lens translation moves in the opposite direction of this design; that is, all other designs attempt to reduce the upper portion of the contact lens as much as possible, rather than thickening it and fixing it to the upper eyelid. The contact lens described herein provides a translational contact lens, including a soft contact lens, that is more comfortable and requires less fitting time than a rigid gas-permeable lens. Generally speaking, patients are more willing and able to wear a soft contact lens than a rigid gas-permeable contact lens, and a soft contact lens requires less experience to fit.The current state of the art in bifocal or multifocal soft contact lenses is simultaneous vision. In these lenses, both the rays that focus distance vision and the rays that focus near vision are within the pupil at the same time. Thus, the wearer must be able to ignore the rays that are not in focus. This leads to some degradation of vision. The translating soft contact lens described herein only allows light to be focused from one distance at a time, providing clearer vision at each distance. The other current state-of-the-art option for fitting presbyopic patients with soft contact lenses is called monovision. In this case, one eye is corrected for distance vision (usually the dominant eye) and the other eye is corrected for near vision (usually the non-dominant eye). Some patients are unable to adapt to this type of lens, especially when they require a greater reading range. The difference between the two eyes becomes very uncomfortable. Furthermore, it is well established that monovision correction with contact lenses or laser vision correction leads to a loss of depth perception. The translational soft contact lens described herein allows for the use of greater reading ranges without degrading the quality of distance vision.Because both eyes are fully and equally corrected for distance and near vision in the described design, there is no induced loss of depth perception. The translating soft contact lens described herein may also have an optical segment that provides a power gradient between the distance and near segments. The contact lens described herein is designed to serve many practical purposes. For example, in both rigid and soft contact lenses, the lens designs described herein provide rotational stability in all gaze directions for toric contact lens designs, contact lenses designed to correct various types of ocular aberration beyond spherical correction, for electronically generated and / or optically viewed virtual images, and / or bifocal or multifocal contact lenses. Additionally, the lens designs described herein enable upward translation of a bifocal / multifocal contact lens in downward gaze.Furthermore, the lens designs described herein achieve a “palpebral coupling” fit similar to the rigid gas permeable contact lens, i.e., they keep the contact lens fixed under the upper eyelid before, during, and after blinking. In one modality, the upper portion of the contact lens interacts with the user's upper eyelid. The upper portion of the contact lens that interacts with the upper eyelid can comprise 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, or 75% of the area between the upper edge of the contact lens and the geometric center of the contact lens. For example, the area of ​​the upper portion of the contact lens (meaning the "upper half" of the contact lens, or the area between the upper edge and the geometric center of the contact lens) that interacts with the upper eyelid can comprise from 10 to 50% of the upper area of ​​the lens. Conventionally, a less-bearing lenticular can be used in rigid gas-permeable contact lenses to create an eyelid-coupling fit in a more conformal contact lens. In the contact lens design described herein, a lenticular 101 is placed only on the central and upper portion of the lens, rather than on a larger portion of the lens circumference. Some modalities of the lens designs described herein have a smaller area where a relatively thick rim is present to interact with the upper eyelid margin, and the minimal presence of the lenticular improves comfort compared to a traditional less-bearing lenticular that would typically be placed on the entire circumference of the lens.There is sufficient surface area and lenticular thickness present in the contact lens described herein; however, to interact with the upper tarsal plate to aid in centration and rotational stability. As shown in Figures 2A and 2B, and referred to herein as a “push-pull” mechanism, in addition to the upper eyelid interacting with the lenticular, the upper eyelid may also interact with an optional prism in the lower portion of the contact lens, according to the lens designs described herein. The rim of the upper eyelid presses the thicker base of the contact lens prism downward with each blink. The prism base also interacts with the lower eyelid with each blink; thus, the prism base is positioned above the margin of the lower contact lens, sufficiently so that it remains above the lower eyelid when the eye is open.Just as multiple base curve options are available to accommodate different corneal curvatures, multiple prism base heights are optionally used to account for differences in aperture size and eyelid position. Additionally, multiple overall contact lens diameters can be used. In other words, the prism portion can provide a change in the power of the central optical zone of the contact lens. The prism base cannot slide more than 1, 1.5, 2, 2.5, or 3 millimeters (mm) behind the lower eyelid when the patient is looking straight ahead and / or downward when the eye is open and during blinking. As described previously, the contact lens comprises a relatively thick area compared to the remaining portion of the lens. This thick area can be 1.5, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times thicker than the remaining "non-thick" portion of the contact lens. For example, the relatively thick area may comprise a thicker portion that is 2 to 10 times thicker than the remaining center portion of the contact lens. The contact lens modalities described herein can be used to correct refractive errors (myopia, hyperopia, astigmatism, and / or higher-order aberrations) in patients with or without presbyopia, i.e., a reading focal range that shifts upward through translation, in patients with other accommodative disorders, and / or in patients with binocular vision disorders. Presbyopia affects approximately 100% of the population who live long enough (before age 45) to develop the condition. The contact lens modalities described herein can also treat other accommodative disorders or binocular vision disorders.In some cases, the contact lens modalities described herein may be used to display an electronically generated image and / or another optically displayed virtual image. Conventional contact lenses offer very limited options in terms of design parameters such as diameter and curvature. The contact lenses described here achieve translation in a soft contact lens. Soft contact lenses are typically only available in two base curve options, and very few are offered in multiple diameters. These multiple options in these two parameters, in addition to the ability to vary prism height, size, quantity, or axis, are optionally considered in the lens designs described herein. The toricity of the front or back surface utilizes a toric shape, rather than the spherical and corneal shape that occurs in some patients with astigmatism. The lenses described herein still function when the cornea is spherical (not toric).The lenses described also have an advantage over base-in prism, peri-weight, and dynamic stability lenses in that they optionally use a lenticular aspect described above to utilize the tarsal plate of the upper eyelid to stabilize the contact lens, in addition to the prismatic interaction of the lower eyelid (in lenses with a lower weight or prism). Interactions with both eyelids can provide improved stability. Figures 3A-3F are schematic profile images of the illustrative contact lens, which has several shaped lenticulars on a top portion of the lens. Each lenticular 301 has a shaped top surface 302. In Figure 3A, lenticular 301 comprises a less-carrying, rounded curve 302 on a central, top portion of the lens. As described herein, the lenticular may be on or near the edge of the contact lens 100, or located further back from the edge of the lens 100. Furthermore, the lens 100 may include a single lenticular 301, or it may have a plurality of lenticulars with various shapes, sizes, and designs.Figures 3B–3F illustrate non-limiting examples of profiles for several other lenticulars, including a flat-top lenticular 301 (Figure 3B), a lenticular 301 having a flat top with rounded edges 302 (i.e., a “bulge”) (Figure 3C), a lenticular 301 having a concave top 302 (Figure 3D), a lenticular 301 having a convex top 302 (Figure 3E), and a lenticular 301 having a tapered top 302 that is thicker and closer to the edge of the contact lens and tapers gradually toward the center of the contact lens (Figure 3F). It will be appreciated that the lenticulars 301 shown in Figures 3A–3F are not intended to be limiting and are for illustrative purposes only. It is envisaged that the lenticulars of this invention are not limited in shape, size, number, position or location (as long as they are substantially located within the upper portion of the contact lens).Figure 4A is a schematic profile image of an illustrative contact lens having an anatomically shaped lenticular in a superior portion of the contact lens. In this modality, the lenticular is specifically shaped to fit within a conjunctival sac and to be attached to the wearer's upper eyelid. For example, the lenticular in Figure 4A is designed to fit within the Kessing space of the wearer's upper eyelid (see Kessing, Svend V., “A New Division of the Conjunctiva on the Basis of X-Ray Examination,” Acta Ophthalmologica, Vol. 45, 1967, which is incorporated in full by reference). Figure 4B is a front view of the anatomically shaped lenticular in Figure 4A showing the width (w) and height (h) dimensions.In one of the modalities, the anatomically shaped lenticular 401 shown in Figures 4A and 4B is formed and sized according to the conjunctival insertions described in U.S. Patent No. 6,217,896, which is incorporated herein by reference. Although volumetric and linear dimensions vary among individuals, human inferior conjunctival sacs generally share certain characteristics: a horizontal crescent shape; a thick lower horizontal rim; and a sagittal wedge shape. To maximize the actual volume and shape that can be contained within human conjunctival sacs, the anatomically shaped lenticular 401 can be crescent-shaped in the horizontal plane, with the central posterior curvature conforming to the bulbar surface (posterior curvature radius approximately 14 mm, range 12–18 mm). Most of the device volume is contained within the lower 50% of the shape, inside a horizontal rim located approximately 1 / 3 of the way from the top of the lenticular 401 and 1 / 3 of the way from the bottom of the lenticular 401.The maximum thickness of this rim, which is crescent-shaped in the horizontal plane, is a dimension listed in Table I below. The anterior surface of lenticular 401 is more curved than the posterior surface to achieve this crescent shape. Lenticular 401 narrows superiorly above the rim, positioning itself between the tarsal plate and the globe, so that the anatomically shaped lenticular 401 reduces to an acute angle at its superior border. Therefore, in the sagittal plane, lenticular 401 appears wedge-shaped above the rim, such that pressure from the lower margin of the upper eyelid induces a "less load-bearing" effect and helps to contain lenticular 401 within the lower sac. From the center of the thickest volume in the rim, lenticular 401 tapers to acute points nasally and temporally, so that it is fixed within the tissue most closely associated with the canthus.The horizontal length of lenticular 401 is a dimension, included in Table I, that is measured along the back surface of lenticular 401 from left to right behind the flange. At the bottom, the lenticular is surrounded from left to right (radius of curvature approximately 22 mm, range 20–25 mm) and from front to back (radius of curvature approximately 0.75 mm, range 0.5–1.0 mm at the center) with the maximum bottom of lenticular 401 at the horizontal center. Table I below provides illustrative dimensions for the three sizes of an anatomically shaped lenticular 401 (refer to Figures 4A and 4B). ινΐΛ / a / zuzz / uiui DIMENSIONS OF THREE DESIGNS OF AN ANATOMICALLY SHAPED LENTICULAR Three designs by size DIMENSIONS LARGE MEDIUM SMALL Volume (μΙ) 160 110 60 Maximum horizontal width (W) (mm) 26.75 23.5 20.25 Maximum vertical height (H) (mm) 9.0 7.9 6.8 Maximum thickness (T) (mm) 2.6 1.7 0.8 Table I ινΐΛ / a / zuzz / uiui From the thickest sagittal plane at its horizontal midpoint, the anatomically shaped lenticular 401 on the right has the same but opposite shape to the one on the left. This allows the anatomically shaped lenticular 401 to be used in the conjunctival sac of either eye, as the left / right shape difference between the conjunctival sacs of the two eyes has proven to be minimal. The vertical height of the insertion (or thickness, T) (see Figure 4A), another dimension mentioned in Table I, is greatest at the center of the insertion and decreases on the left and right sides to the sharp lateral extremities. This is because the anatomically shaped lenticular 401 is somewhat meniscus-shaped in the face plane, being more convex at its lower edge and relatively flat horizontally at its upper edge.Figure 4C is a front view of a contact lens 100 having an anatomically shaped lenticular 401 on an upper portion of the contact lens. Additional non-limiting examples of anatomically shaped lenticulars include lenticulars having shapes including round / oval, elliptical, triangular, heart, square, pentagonal, diamond, pear, rectangular, combinations of these, and the like, such that the lenticular is shaped to fit in a conjunctival sac and attaches to the wearer's upper eyelid. Figures 5A and 5B are profile images of eyes illustrating the eyelid coupling fit of contact lens 100, which has a lenticular 501 on the upper portion of the lens, compared to a contact lens without a lenticular. In various modalities, the lenticular 501 can be anatomically shaped to bond with the upper eyelid by fitting within a conjunctival sac. Figures 6A–6J illustrate the front views of the contact lens having non-limiting examples of lenticulars in the upper portion of the contact lens as described herein. It will be appreciated that the lenticular regions of the modalities shown in Figures 6A–6J have at least one portion of the lenticular where the thickness of the lenticular is greater than the thickness of the lens in its central portion. In Figure 6A, the lenticular 601 has a semicircular shape. In Figure 6B, the lenticular 601 has an arc shape. It will be appreciated that the arc length may be shorter or longer than the length shown in Figure 6B. In Figures 6C and 6D, the lenticular 601 comprises a plurality of lenticular sections 602.For example, the lenticular 601 of Figure 6C comprises a plurality of hemispherical sections in the upper portion of the contact lens, and the lenticular 601 of Figure 6D comprises a plurality of arc sections. It will be appreciated that the multi-section lenticulars of Figures 6C and 6D are illustrative and that other numbers of sections, shapes, and sizes of lenticulars are contemplated within the scope of the embodiments of the invention. Figures 6E-6J illustrate non-limiting examples of other shapes, sizes, positions, and locations of lenticular 601 that are contemplated within the scope of the embodiments of the invention. Each of the embodiments shown herein may or may not have prisms and / or weights in the lower portion of the contact lens 100. Furthermore, this description outlines methods for manufacturing the contact lenses described herein. For example, one method for manufacturing a contact lens is described, which includes forming a lenticular element in the upper portion of the lens. The contact lens may further comprise a base-down prism or ballast in the lower portion of the lens. In one example, the base-down prism or ballast is added to the lens in a second stage of a manufacturing process. Furthermore, a method for treating an individual requiring vision correction is described. This method involves providing the contact lens described herein to the individual, thereby treating the individual's vision. In one example, the individual has been diagnosed with refractive error (e.g., astigmatism, myopia, hyperopia). In another example, the individual has been diagnosed with presbyopia, another accommodative disorder, and / or a binocular vision disorder.For example, one or more surfaces of the contact lens modality described herein may be toric (to treat astigmatism), and / or a flatter or more pronounced frontal surface may be formed in the contact lens modalities described herein (to correct either myopia or hyperopia), and / or a bifocal / trifocal / multifocal change in power may be formed on the lower portion of the lens to treat presbyopia. Additional medical uses of the contact lens modalities described herein include the treatment of keratoconus. In addition, the contact lens modalities described can be used for cosmetic purposes such as changing / enhancing eye color and / or eye appearance. As used in the specification, and in the accompanying claims, the singular forms “a / an”, “a / an” and “the” include plural referents unless the context clearly indicates otherwise. The compositions and methods of the appended claims are not limited in scope by the specific compositions and methods described herein, which serve as illustrations of a few aspects of the claims, and it is intended to include any functionally equivalent composition and method within the scope of the claims. Various modifications of the compositions and methods, in addition to those shown and described herein, are also intended to be included within the scope of the appended claims. Furthermore, while only certain method steps and representative compositions described herein are specifically described, other combinations of method steps and compositions are also intended to be included within the scope of the appended claims, even if not specifically mentioned.Therefore, a combination of steps, elements, components, or constituents may be explicitly mentioned in this description, or less; however, other combinations of steps, elements, components, and constituents are included even if not explicitly mentioned. The term “comprising” and variations thereof, as used herein, are synonymous with the term “including” and variations thereof and are open, non-limiting terms. Although the terms “comprising” and “including” have been used herein to describe various embodiments, the terms “essentially consisting of” and “consisting of” may be used instead of “comprising” and “including” to provide more specific embodiments of the invention and are also described.Unlike the examples, or where otherwise indicated, all numbers expressing quantities of ingredients, reaction conditions, and so forth, used in the specification and claims shall be understood at a minimum, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, to be considered in light of the number of significant digits and ordinary rounding approaches.

Claims

1. Contact lenses comprising: a front surface; and a back surface, wherein the back surface is close to the user's eye when in a location on the user's eye; wherein the contact lens has a first thickness in an upper portion of the contact lens that is greater than a second thickness in a central portion of the contact lens, said thickness being defined by an axial distance between the front surface and the back surface;wherein the first thickness interacts with a superior tarsal plate of a user's upper eyelid and a first thickness is configured to hold the contact lens to the upper eyelid, said holding which moves the contact lens upwards when the user looks downwards, and wherein the first thickness has a top surface, said top surface having a shape selected from the group consisting of flat, flat with rounded corners, concave, convex or pointed having a thicker portion that is closer to an edge of the contact lens, or combinations thereof.

2. The contact lens according to claim 1, wherein the contact lens is a soft contact lens, a gas permeable contact lens, or a hybrid contact lens.

3. The contact lens according to claim 1, wherein the first thickness interacts with the upper tarsal plate of the user's upper eyelid, providing centering and rotational stability to the contact lens.

4. The contact lens according to claim 1, wherein the first thickness comprises a plurality of sections, each section having a thickness that is thicker than the second thickness in the central portion of the contact lens.

5. The contact lens according to claim 1, wherein the first thickness is anatomically shaped.

6. The contact lens according to claim 5, wherein the anatomical shape of the first thickness is designed to fit within the Kessing space of the user's upper eyelid.

7. Contact lenses comprising: a front surface; and a back surface, wherein the back surface is close to the user's eye when in a location on the user's eye; wherein the contact lens has a first thickness in an upper portion of the contact lens that is greater than a second thickness in a central portion of the contact lens, said thickness being defined by an axial distance between the front surface and the back surface; wherein the first thickness interacts with a superior tarsal plate of a user's upper eyelid and a first thickness is configured to hold the contact lens to the upper eyelid, said holding moving the contact lens upward when the user looks downward, and wherein the second thickness is comprised of a plurality of sections, each section being thicker than the second thickness in the central portion of the contact lens.

8. The contact lens according to claim 7, wherein the contact lens is a soft contact lens, a gas permeable contact lens, or a hybrid contact lens.

9. The contact lens according to claim 7, wherein the first thickness interacts with the upper tarsal plate of a user's upper eyelid, providing centering and rotational stability of the contact lens.

10. The contact lens according to claim 7, wherein at least a plurality of sections are anatomically shaped.

11. The contact lens according to claim 10, wherein the anatomical shape of at least one section of the plurality of sections is designed to fit within the Kessing space of the user's upper eyelid.

12. The contact lens according to claim 7, wherein each section of the plurality of sections has a shape selected from the group consisting of arcuate, curved, round, circular, hemispherical, square, rectangular, triangular, oval, multilateral and combinations thereof.

13. The contact lens according to claim 7, wherein each section of the plurality of sections has a top surface, said top surface having a shape selected from the group consisting of curved, round, spherical, flat, flat with rounded corners, concave, convex or sharp having a thicker portion that is closer to an edge of the contact lens, or combinations thereof.

14. A contact lens comprising: a front surface; and a back surface, wherein the back surface is close to the user's eye when the contact lens is in place on the user's eye; wherein the contact lens has a first thickness in an upper portion of the contact lens that is greater than a second thickness in a central portion of the contact lens, said thickness being defined by an axial distance between the front surface and the back surface; wherein the first thickness interacts with a superior tarsal plate of a user's upper eyelid and a first thickness is configured to hold the contact lens to the upper eyelid, said holding that moves the contact lens upward when the user looks downward, and wherein the first thickness has an anatomical shape.

15. The contact lens according to claim 14, wherein the contact lens is a soft contact lens, a gas-permeable contact lens, or a hybrid contact lens.

16. The contact lens according to claim 14, wherein the first thickness interacts with the upper tarsal plate of a user's upper eyelid, providing centering and rotational stability.

17. The contact lens according to claim 14, wherein the first thickness comprises a plurality of sections located in the upper portion of the contact lens, each section of the plurality of sections being thicker than the second thickness in the central portion of the contact lens.

18. The contact lens according to claim 14, wherein the anatomical shape of the first thickness is designed to fit within the Kessing space of the user's upper eyelid.

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