Scleral lens with scalloped channels or circumferential fenestrated channels
First Claim
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1. A scleral lens to be disposed on an eye, the scleral lens comprising:
- an optic portion having a first curvature, and a scleral portion having a second curvature, wherein;
(a) the first curvature is adapted to cover a cornea of the eye without substantially touching the cornea;
(b) the second curvature is adapted to contact the scleral portion of the eye without substantially touching the cornea;
(c) the optic portion and the scleral portion intersect to form an angle less than 180 degrees measured from the anterior side of the scleral lens;
(d) the scleral portion has an inner rim bounding the optic portion and an outside rim bounding the outside of the scleral lens;
(e) the scleral portion further comprises at least one channel extending radially from the inner rim to the outside rim; and
(f) the outside rim of the scleral portion defines a scallop where the channel intersects the outside rim of the scleral portion.
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Abstract
A scleral lens is provided with scalloped channels on its posterior surface to improve the flow of fluid between the scleral lens and the eye. Also provided is a scleral lens with a fenestrated channel circumscribing the intersection of the optic portion and the scleral portion of the lens. The circumferential fenestrated channel prevents adhesion and suction between the lens and the eye, and improves comfort, vision, and the fitting process.
118 Citations
19 Claims
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1. A scleral lens to be disposed on an eye, the scleral lens comprising:
an optic portion having a first curvature, and a scleral portion having a second curvature, wherein; (a) the first curvature is adapted to cover a cornea of the eye without substantially touching the cornea; (b) the second curvature is adapted to contact the scleral portion of the eye without substantially touching the cornea; (c) the optic portion and the scleral portion intersect to form an angle less than 180 degrees measured from the anterior side of the scleral lens; (d) the scleral portion has an inner rim bounding the optic portion and an outside rim bounding the outside of the scleral lens; (e) the scleral portion further comprises at least one channel extending radially from the inner rim to the outside rim; and (f) the outside rim of the scleral portion defines a scallop where the channel intersects the outside rim of the scleral portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A scleral lens to be disposed on an eye, the scleral lens comprising:
an optic portion having a first curvature, and a scleral portion having a second curvature, wherein; (a) the first curvature is adapted to cover a cornea of the eye without substantially touching the cornea; (b) the second curvature is adapted to contact the scleral portion of the eye without substantially touching the cornea; (c) the optic portion and the scleral portion intersect to form an angle less than 180 degrees measured from the anterior side of the scleral lens; (d) the optic portion further comprises a channel circumscribing the entire optic portion of the scleral lens such that the channel lies over the peripheral surface of the cornea when the scleral lens is disposed on the eye; and (e) the channel defines at least one fenestration to the anterior side of the lens. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
Specification