Wide angle ophthalmic lens

Details Wide angle ophthalmic lens Wide angle ophthalmic lens

1989-10-27

1991-04-16

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351160R, A61B 300, G02C 704

Patent

active

050077295

ABSTRACT:
An ophthalmic lens which has three elements, a contact lens, a center lens, and an entry lens. The lens produces a wide field, aerial image of the fundus of the eye. The lens is particularly useful because it provides high resolution of the peripheral retina, and causes little or no distortion of the laser beam used for peripheral fundus laser treatment.

REFERENCES:
patent: 3954329 (1976-05-01), Pomerantzeff
patent: 4134647 (1979-01-01), Ramos-Caldera
patent: 4410245 (1983-10-01), Koester
patent: 4452514 (1984-06-01), Spitznas
patent: 4469413 (1984-09-01), Shirayanagi
patent: 4502764 (1985-03-01), Riquin
patent: 4627694 (1986-12-01), Volk
patent: 4637699 (1987-01-01), Sigelman
patent: 4669839 (1987-06-01), Muchel
patent: 4671631 (1987-06-01), Sigelman
patent: 4682866 (1987-07-01), Volk
patent: 4704018 (1987-11-01), Takhashi
patent: 4721378 (1988-01-01), Volk
patent: 4728183 (1988-03-01), Heacock et al.
patent: 4738521 (1988-04-01), Volk
P. Roussel et al., "Contact Glass for Use . . . Optical Aspects," International Ophthalmology 6: 183-190-(1983).

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