초록 ▼

A contact lens providing high visual acuity with the comfort of a soft lens includes a thin layer of hard lens material at the front surface of the contact lens; and a second soft lens material layer at the posterior portion of the lens. The soft lens provides a contact area substantially in contact

A contact lens providing high visual acuity with the comfort of a soft lens includes a thin layer of hard lens material at the front surface of the contact lens; and a second soft lens material layer at the posterior portion of the lens. The soft lens provides a contact area substantially in contact with the central region of the cornea. The first layer is bonded on top of the second layer directly or through a third elastic material layer. Manufacturing methods overcome problems of swelling of the soft lens component during hydration.

대표청구항 ▼

I claim: 1. A durable, high visual acuity contact lens having the comfort of a soft lens, comprising: (a) a soft contact lens component; and (b) a hard contact lens material between 2 and 150 microns sprayed onto the outer surface of the soft contact lens, and (c) wherein a posterior surface of the

I claim: 1. A durable, high visual acuity contact lens having the comfort of a soft lens, comprising: (a) a soft contact lens component; and (b) a hard contact lens material between 2 and 150 microns sprayed onto the outer surface of the soft contact lens, and (c) wherein a posterior surface of the soft contact lens component provides for a contact area substantially over a central region of a cornea, and (d) wherein the soft lens component comprises material having a DK value of 30 or higher. 2. The contact lens of claim 1, wherein a thickness of the soft contact lens component comprises 50% or less of a conventional soft contact lens. 3. The contact lens of claim 1, wherein a thickness of said soft component comprises 85 microns or less. 4. A method of providing good mechanical matching of a hard lens material and a soft lens material, comprising: (a) generating a soft contact lens component; and (b) generating a hard contact lens material coupled to the outer surface of the soft contact lens component, and (c) wherein a posterior surface of the soft contact lens component provides for a contact area substantially in contact with a central region of a cornea, (d) swelling the soft contact lens component by hydrating with a liquid; freezing the hydrated soft component; and applying the hard contact lens material to said outer surface of said soft contact lens component during a substantially frozen state of the hydrated soft component. 5. The method of claim 4, wherein the freezing comprises applying a cold metal mold in substantially the shape of a mold used in manufacturing the soft component. 6. The method of claim 4, wherein the swelling comprises mixing a light absorbing additive in the liquid. 7. A durable, high visual acuity contact lens having the comfort of a soft lens, comprising: (a) a soft contact lens component; (b) an intermediate layer sprayed onto the soft lens component; and (c) a hard lens component between 2 and 150 microns sprayed onto the intermediate layer, and (d) wherein a posterior surface of the soft contact lens component provides for a contact area substantially over a central region of a cornea, and (e) wherein the soft lens component comprises material having a DK value of 30 or higher. 8. A method of manufacturing a durable, high visual acuity contact lens having the comfort of a soft lens, comprising: (a) spin or mold casting a soft contact lens component on the hard material; (b) curing each of the hard material and the soft component; (c) forming an intermediate layer onto the soft component; (d) curing the intermediate layer including applying UV light; and (e) forming the hard material on the intermediate layer. 9. A method of manufacturing a durable, high visual acuity contact lens having the comfort of a soft lens, comprising: (a) providing a soft contact lens component; (b) hydrating the soft contact lens component; and (c) freezing the soft contact lens component; (d) drying the soft contact lens component; (e) applying a hard lens component on the soft contact lens component; and (f) curing the hard lens component. 10. The method of claim 9, wherein the drying comprises transferring the soft component to a dry chamber to dehydrate. 11. The method of claim 9, wherein the drying comprises applying localized heating. 12. The method of claim 11, wherein the localized heating comprises applying light with absorption depth less than 40 microns from an anterior surface of the soft contact lens component. 13. The method of claim 9, further comprising heating to evaporate water content of the soft lens component, and is provided by heating from a light source that is absorbed by the water content, such that a polymer component of the soft lens layer is exposed to form a bond with the hard lens material. 14. The method of claim 9, wherein the hydrating comprises mixing a light absorbing additive in water for the hydrating. 15. The method of claim 14, wherein the light absorbing additive comprises a dye. 16. A contact lens providing high visual acuity with the comfort of a soft lens, comprising: (a) a first layer at the front surface of the contact lens, comprising hard lens material; and (b) a second layer at the posterior portion of the lens, comprising soft lens material, the soft lens providing a contact area substantially in contact with a central region of a cornea, (c) wherein the first layer is on top of the second layer, and (d) wherein the first layer is bonded to the second layer directly or through a third layer comprising elastic material bonding the first layer to the second layer, or a combination thereof (e) wherein the lens further comprises at least one absorbent added to water content of the soft lens material, wherein the absorbent generates heat by absorbing a light source, and evaporates the water content in the soft lens material, and exposes a soft lens polymer component to bond with the hard lens material. 17. The contact lens of claim 16, wherein a thickness of the first layer is between 2 microns and 150 microns. 18. The contact lens of claim 17, wherein the first layer thickness is between 5 microns and 30 microns. 19. The contact lens of claim 16, wherein a Dk value of material in the first layer is higher than 30. 20. The contact lens of claim 19, wherein the Dk value is higher than 90. 21. The contact lens of claim 16, wherein a thickness of the second layer is between 50 microns and 250 microns. 22. The contact lens of claim 21, wherein the first layer thickness is between 5 microns and 30 microns. 23. The contact lens of claim 16, wherein a Dk value of material in the second layer is higher than 30. 24. The contact lens of claim 23, wherein the Dk value of the second layer material is higher than 90. 25. The contact lens of any of claims 1, 4, 7, 9 or 16, wherein the hard contact lens material has a diameter of 3 millimeters or more. 26. The contact lens of any of claims 1, 4, 7, 8 or 16, wherein the hard contact lens material has a diameter covering substantially or exceeding a patient's nighttime pupil size. 27. The contact lens of any of claims 1, 4, 7, 8 or 16, wherein the soft component and the hard material have been spun or mold casted, or a combination thereof. 28. The contact lens of any of claims 1, 4, 7, 8 or 16 wherein—the intermediate layer or the hard contact lens material, or both, is cured by application of UV light. 29. The contact lens of any of claims 1, 4, 7, 8 or 16 wherein the soft component comprises silicone hydrogel or fluoro silicone hydrogel, or a combination thereof. 30. The contact lens of any of claims 1, 4, 7, 8 or 16 wherein the soft component comprises HEMA, MMA, VP, GlyMA or MA, or mixtures or copolymers thereof. 31. The contact lens of any of claims 1, 4, 7, 8 or 16 wherein the hard component comprises siloxy floromethacrylate copolymers. 32. The contact lens of any of claims 1, 4, 7, 8 or 16 wherein the hard component comprises aquifoco, hexafocon, paflufocon-D, or oprifocon-A, or combinations thereof. 33. The contact lens of any of claims 1, 4, or 9, further comprising an intermediate layer coupled between the soft component and the hard material. 34. The contact lens of any of claims 1, 7 or 16 wherein the intermediate material comprises CAB or silicone rubber, or a combination thereof. 35. The method of any of claims 8 or 16, wherein at least one layer of the contact lens comprises CAB or silicone rubber. 36. The method of any of claims 8 or 16, further comprising selecting silicone hydrogel or fluoro silicone hydrogel for soft component material. 37. The method of any of claims 8 or 16, further comprising selecting HEMA, MMA, VP, GlyMA or MA or mixture or copolymers thereof for soft component material. 38. The contact lens of any of claims 4 or 9, wherein the applying comprises spraying a layer of hard lens material on the soft lens layer; and curing the hard lens material to form a bond with the soft lens layer. 39. The method of any of claims 4 or 9, further comprising applying a cold finger on the back surface of the soft lens layer to maintain substantially most of the water content in a frozen state. 40. The contact lens of claim 38, wherein the curing comprises applying UV light.