Contact lenses for refractive correction
First Claim
1. An ophthalmic lens for correcting a refractive error of an eye, the eye having a cornea with a refractive shape extending across an optical region of the eye, the ophthalmic lens comprising:
- an inner optic portion configured to be disposed over the optical region of the cornea;
a posterior surface extending along the inner optic portion and configured so that engagement of the posterior surface against the eye deforms the posterior surface of the lens and so that the posterior surface extending along the inner optic portion has a shape diverging from the refractive shape of the cornea; and
a peripheral portion of the ophthalmic lens disposed radially outward of the inner optic portion;
wherein,the inner optic portion is characterized by an inner rigidity the peripheral portion is characterized by a peripheral rigidity;
the inner rigidity is greater than the peripheral rigidity; and
the inner rigidity is from about 1E8 MPa-μ
m3 to about 1E11 MPa-μ
m3.
3 Assignments
0 Petitions
Accused Products
Abstract
Ophthalmic lenses for correcting refractive error of an eye are disclosed. Ophthalmic lenses include a deformable inner portion and a deformable peripheral portion. When disposed over the optical region of an eye, the inner portion is configured so that engagement of the posterior surface against the eye deforms the posterior surface so that the posterior surface has a shape diverging form the refractive shape of the epithelium when viewing with the eye through the ophthalmic lens. The rigidity of the inner portion is greater than the rigidity of the peripheral portion and the ophthalmic lenses are configured to allow movement relative to the eye upon blinking of the eye and to be substantially centered on the optical region of the cornea following the blinking of the eye. Methods of correcting refractive errors of an eye such as astigmatism or spherical aberration using the ophthalmic lenses are also disclosed.
221 Citations
24 Claims
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1. An ophthalmic lens for correcting a refractive error of an eye, the eye having a cornea with a refractive shape extending across an optical region of the eye, the ophthalmic lens comprising:
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an inner optic portion configured to be disposed over the optical region of the cornea; a posterior surface extending along the inner optic portion and configured so that engagement of the posterior surface against the eye deforms the posterior surface of the lens and so that the posterior surface extending along the inner optic portion has a shape diverging from the refractive shape of the cornea; and a peripheral portion of the ophthalmic lens disposed radially outward of the inner optic portion;
wherein,the inner optic portion is characterized by an inner rigidity the peripheral portion is characterized by a peripheral rigidity; the inner rigidity is greater than the peripheral rigidity; and the inner rigidity is from about 1E8 MPa-μ
m3 to about 1E11 MPa-μ
m3. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An ophthalmic lens for correcting a refractive error of an eye, the eye having a cornea with a refractive shape extending across an optical region of the eye, the ophthalmic lens comprising:
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an inner optic portion configured to be disposed over the optical region of the cornea; a posterior surface extending along the inner optic portion adjacent the eye and configured so that engagement of the posterior surface against the eye deforms the posterior surface of the lens and so that the posterior surface extending along the inner optic portion has a shape diverging from the refractive shape of the cornea; a peripheral portion of the ophthalmic lens disposed radially outward of the inner optic portion; and a plurality of fenestrations disposed within the inner optic portion, the peripheral portion, or both the inner optic portion and the peripheral portion; and
at least some of the plurality of fenestrations are configured to maintain tear fluid within one or more lenticular volumes between the posterior surface of the inner optic portion and the cornea, and wherein;an anterior surface of the inner optic portion of the lens is characterized by a spherical profile without a cylindrical component; the inner optic portion is characterized by an inner rigidity and the peripheral portion is characterized by a peripheral rigidity;
the inner rigidity is greater than the peripheral rigidity; and
the inner rigidity is from about 1E8 MPa-μ
m3 to about 1E11 MPa-μ
m3; andthe inner optic portion and the peripheral portion are characterized by a water content less than 5%. - View Dependent Claims (24)
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Specification