Goniotomy lens

Details Goniotomy lens Goniotomy lens

1984-07-11

1986-02-04

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351219, A61B 300, G02C 704

Patent

active

045681570

ABSTRACT:
A goniotomy lens includes a truncated generally pyramidal body having four reflective sides, a concave smaller end face and an angled larger upper end face. The angled upper end face permits a standard operating microscope of be utilized since light produced by the microscope is reflected off-axis from the surface to minimize glare. The smaller end face has a curvature of approximately 43 diopters in order to sealing mate with the human eye. The reflective sides of the lens enable the angle of the anterior chamber to be viewed during a goniotomy. The ratio of the height of lens to the width of its base is advantageously less than 2 and most advantageously approximately 1.

REFERENCES:
patent: 3820879 (1974-06-01), Frisen
patent: 4033679 (1977-07-01), Sussman
patent: 4067646 (1978-01-01), Nohda
patent: 4134647 (1979-01-01), Ramos-Caldera
patent: 4378147 (1983-03-01), Fujita
patent: 4439026 (1984-03-01), Wilms

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