Conoscopic system for real-time corneal topography

Details Conoscopic system for real-time corneal topography Conoscopic system for real-time corneal topography

1997-05-09

1999-06-01

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 300

Patent

active

059092700

ABSTRACT:
A corneal topographer based on conoscopic holography with partially coherent illumination. Corneal topographic measurements can be accomplished at a processing rate higher than the standard video rate of 30 Hz. The conoscopic measurements can be used in an opto-electronic servo to control a photorefractive keratectomy system in real time for an improved accuracy in laser ablation of a corneal surface.

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Gabriel Sirat and Demetri Psaltis, "Conoscopic Holography", Optic Letters/vol. 10, No. 1/Jan. 1985.
Gabriel Sirat, Conoscopic Holography: I. Basic Principles and Physical Basis, Journal of Optics Society/vo. 9, No. 1/Jan. 1992.
Gabriel Sirat, Conoscopic Holography. II. Rigorous Derivation, J. Opt. Soc. Am./vol. 9, No. 1/Jan. 1992.
Stanley Diamond, M.D., "Excimer Laser Photorefractive Keratectomy (PRK) for Myopia--Present Status: Aerospace Considerations", Aviation, Space, and Environmetnal Medicine, vo. 66, No. 7/Jul. 1995.

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