Surgery – Instruments – Light application
Patent
1993-08-30
1995-11-28
Pellegrino, Stephen C.
Surgery
Instruments
Light application
606 5, A61N 506, A61B 1736
Patent
active
054703298
ABSTRACT:
An operation apparatus for ablating the cornea by laser beam and correcting ametropia of the eye comprising a diaphragm with variable aperture, which is disposed on the optical path along which the laser beam is irradiated on the cornea, a shading member for shading the aperture of the diaphragm in the meridian diameter direction of the aperture, which is capable of varying the shading area to the aperture of the diaphragm by changing the turning angle to the optical path, in which aperture diameter of the diaphragm and variation in scope of the shading area by the shading member being controlled, and a beam rotator disposed in the eye side to the diaphragm rotates the laser beam passed through the aperture of the diaphragm about the optical path, whereby the cornea is ablated thicker at the periphery than at the center so as to correct hypermetropia.
REFERENCES:
patent: 4370540 (1983-01-01), Davis et al.
patent: 4648400 (1987-03-01), Schneider et al.
patent: 4732148 (1988-03-01), L'Esperance, Jr.
patent: 4887592 (1989-12-01), Loertscher
patent: 4953969 (1990-09-01), Fedorov
patent: 4994058 (1991-02-01), Raven et al.
patent: 5147352 (1992-09-01), Azema et al.
patent: 5163934 (1992-11-01), Munnerlyn
Harris Sonya
Nidek Co. Ltd.
Pellegrino Stephen C.
LandOfFree
Operation apparatus for correcting ametropia with laser beam does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Operation apparatus for correcting ametropia with laser beam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Operation apparatus for correcting ametropia with laser beam will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2010088