Optical zone marker for refractive surgery

Details Optical zone marker for refractive surgery Optical zone marker for refractive surgery

1994-09-30

1996-11-26

Buiz, Michael Powell

Surgery

Instruments

Corneal cutter or guide for corneal cutter

A61F 900

Patent

active

055780490

ABSTRACT:
The marker is a hollow cylindrical member having a given height between two opposite ends and a given radius with an opening extending therethrough between the two ends and a central axis extending through the opening. One of the ends is a cornea engaging end and the other end is a viewing end. Two aligned spaced apart pointing members extend radially inward to the central axis of the opening from one side of the member such that when viewed from either end, from the central axis, the two pointing members are radially aligned. The pointing member closest to the viewing end has a width not greater then the width of the other pointing member. In another embodiment, a solid pointing plate is employed instead of the two pointing members.

REFERENCES:
patent: 1582063 (1926-04-01), McIntosh
patent: 3190002 (1965-06-01), Bliss
patent: 3325937 (1967-06-01), Morrow
patent: 4515157 (1985-05-01), Fedorov et al.
patent: 4679344 (1987-07-01), Jolly
patent: 4705035 (1987-11-01), Givens
patent: 4875767 (1989-10-01), Wright
patent: 5334213 (1994-08-01), Price, Jr.

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