Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Corneal implant
Patent
1991-03-27
1992-06-23
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Corneal implant
623 4, A61F 214
Patent
active
051239213
ABSTRACT:
A lens for implantation into the cornea of the eye for providing correction for myopia and myopia with accompanying astigmatism wherein a corneal cap section is removed and an implant bed is created to receive the intracorneal lens. The intracorneal lens is formed of a hydrogel type material or other material highly compatible with corneal physiology. In the range of lens powers of approximately -1.0 diopters to -30.0 diopters, the posterior radius of curvature conforms to the receiving surface of the lamellar bed of the cornea and the anterior surface has the radius of curvature necessary to provide the desired lens power for achieving the desired change in the refractive power of the cornea. The lens includes a peripheral transitional zone to join the anterior surface and posterior surface to allow the lens to be implanted onto the corneal bed and to allow for a smooth overlay of the replaced corneal cap section.
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patent: 4607617 (1986-08-01), Choyce
patent: 4676790 (1987-06-01), Kern
patent: 4715858 (1987-12-01), Lindstrom
patent: 4810082 (1989-03-01), Abel
patent: 4865601 (1989-09-01), Caldwell
Sendele et al., Intracorneal Lens Implantation, Arch. Ophthalmol. 101: 940-944, 1983.
Werblin et al., Myopic Hydrogel Keratophakia: Preliminary Report, Cornea 3: 197-204, 1985.
Werblin, et al., "Myopic Correction Using Alloplastic Implants in Non-Human Pirmates--A Preliminary Report," Annals of Ophthalmology, pp. 1127-1130 (Dec., 1984).
Werblin, et al., "Myopic Hydrogel Keratophakia," Cornea, 6(3):197-201 (1987).
Werblin, et al., "Hydrogel Keratophakia-Improvements in Myopic Lens Design," ARVO Abstracts, 9-10:30 (Apr. 28, 1986).
Patel Anilbhai S.
Werblin Theodore P.
Copeland Barry L.
Green Randall L.
Nestle S.A.
Schira Jeffrey S.
Willse D.
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