Method of laser-sculpture of the optically used portion of the c

Details Method of laser-sculpture of the optically used portion of the c Method of laser-sculpture of the optically used portion of the c

1987-07-29

1989-01-17

Kamm, William E.

Surgery

Truss

Pad

128362, A61F 900

Patent

active

047982047

ABSTRACT:
The invention contemplates removal of epithelium-layer material from the anterior surface of the cornea, as a step preparatory to sculpting laser surgery, wherein controlled ultraviolet irradiation of the cornea is operative to surgically ablate corneal tissue within an epithelium-free area which is in the optically used central region of the cornea. For corrective sculpting recurvatures involving relatively small diopter change, the sculpture proceeds via selectively distributed ultraviolet radiation to the epithelium-free area, with penetration essentially only or at least predominantly in the tissue of Bowman's membrane, thus achieving the corrected-curvature profile essentially only or predominantly in the tissue of Bowman's membrane.

REFERENCES:
patent: 4665913 (1987-05-01), L'Esperance

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