Intraocular lens with converging and diverging optical portions

Details Intraocular lens with converging and diverging optical portions Intraocular lens with converging and diverging optical portions

1986-05-06

1987-05-19

Apley, Richard J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

Intraocular lens

A61F 216

Patent

active

046664467

ABSTRACT:
An intraocular lens for patients having macular degeneration. The intraocular lens comprises a first portion including a diverging lens, and a second portion including a converging lens. The converging lens provides the patient with substantially the same vision he or she had prior to implantation of the intraocular lens, i.e., the decreased visual acuity normally associated with macular degeneration, while providing unmagnified and unrestricted peripheral vision. The diverging lens, when combined with converging lens means located outside the eye (e.g. a spectacle lens), provides a magnified retinal image of a given object with increased visual acuity but a restricted visual field. Thus, the intraocular lens of the invention provides the patient with the choice of unmagnified but peripherally unrestricted vision or magnified but peripherally restricted vision.

REFERENCES:
patent: 4074368 (1978-02-01), Levy et al.
patent: 4581031 (1986-04-01), Koziol et al.
Ocular Surgery News, Jan. 15, 1986 edition, p. 14.
A New Approach to Macular Degeneration: A Low Vision System Utilizing an Iol of High Negative Power. (undated).
Donn, A. and Koester, an Ocular Telephoto System Designed to Improve Vision in Macular Disease, the CLAO Journal, vol. 12, No. 2, pp. 81-85, (April 1986).
Choyce, D. P., Intra-Ocular Lenses and Implants, London, 1964, pp. 156-161.

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