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US 4,907,585 AGranted
Method for improving farsightedness
OwnerRonald A. Schacharinventor
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Abstract
The specification discloses apparatus for changing the radius of curvature of a cornea, which includes a needle (34) for being inserted into the periphery (14) of the cornea (10). A device (36, 38, 40) heats the needle (34) to a temperature sufficient to degrade a plurality of elongated regions (12) of the corneal stroma, such that the limbus of the cornea is constricted to change the radius of curvature of the cornea.
Claims7
A method of changing the radius of curvature of a cornea comprising:
- inserting an elongated member into a plurality of locations about the periphery of the cornea, and
- heating said elongated member to a temperature sufficient to degrade a plurality of elongate regions of corneal stroma, such that the limbus of the cornea is constricted to change the radius of curvature of the cornea.
A method of changing the radius of curvature of a cornea comprising:
- inserting the end of an elongated member into a plurality of locations about the outer periphery of the cornea, and
- applying heat in a localized position of said end in order to raise the temperature only of the adjacent cornea stroma sufficiently to degrade the stroma.
A method of improving farsighted vision in the human eye, comprising the steps of:
- inserting a needle into peripheral areas of the cornea of the eye;
- heating said needle;
- degrading elongate areas of the collagen in the stroma of the cornea of the eye in response to said step of heating;
- and
- said degraded elongate areas acting to constrict the circumference of the limbal ring of the cornea to change the shape of the cornea.
2 more elements
Dependencies are inferred from the claim text.