Method for modifying corneal curvature

Details Method for modifying corneal curvature Method for modifying corneal curvature

1988-01-22

1989-06-20

Cohen, Lee S.

Surgery

Truss

Pad

A61N 506

Patent

active

048401757

ABSTRACT:
A method and apparatus for modifying the curvature of a live cornea via use of an excimer laser. The live cornea has a thin layer removed therefrom leaving an exposed internal surface thereon. Then, either the surface or thin layer is exposed to the laser beam along a predetermined pattern to ablate desired portions. The thin layer is then replaced onto the surface. Ablating a central area of the surface or thin layer makes the cornea less curved, while ablating an annular area spaced from the center of the surface or layer makes the cornea more curved. The desired predetermined pattern is formed by use of a variable diaphragm, a rotating orifice of variable size, a movable mirror or a movable fiber optic cable through which the laser beam is directed towards the exposed internal surface or removed thin layer.

REFERENCES:
patent: 4445892 (1984-05-01), Hussein et al.
patent: 4461294 (1984-07-01), Baron
patent: 4469098 (1984-09-01), Davi
patent: 4648400 (1987-03-01), Schneider et al.
patent: 4665913 (1987-05-01), L'Esperance, Jr.
patent: 4669466 (1987-06-01), L'Esperance
patent: 4718418 (1988-01-01), L'Esperance, Jr.
patent: 4729372 (1988-03-01), L'Esperance, Jr.
patent: 4732148 (1988-03-01), L'Esperance, Jr.
"Excimer Laser Ablator of the Cornea & Lens", by C. Puliafito et al; Opthalmology, 6/85, vol. 92, #6, pp. 741-748.
"Excimer Laser Surgery of the Cornea", by S. Trokel et al.; Am. J. Opthal., vol. 96, pp. 710-715, 1983.
"Corneal Surgery", by L. Girard; The C. V. Mosby Publishing Company, London, 1981; pp. 84, 107-110, 114, 116, 123, 125-133, 143-171.
"Response of the Corneal Epithelium to KrF Excimer Laser Pulses", J. Taboda et al., Health Physics, vol. 40, pp. 677-683, (1981).
"IBM's Heatless Laser Etching: A Hot IC & Medical Prospect", News Spectra, 6/83.
"Heatless Laser Etching", by J. Free: Popular Science, 12/83, p. 124.

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