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December 1963

Ocular Thermal Effects Produced by Photocoagulation

Author Affiliations

New York; Southbridge, Mass
Knapp Memorial Laboratory of Physiological Optics, Institute of Ophthalmology of Presbyterian Hospital, College of Physicians and Surgeons of Columbia University (Dr. Noyori, Dr. Campbell, Miss Rittler).; Research Division, American Optical Company (Dr. Koester).

Arch Ophthalmol. 1963;70(6):817-822. doi:10.1001/archopht.1963.00960050819017

I. Introduction  In the past ten years photocoagulation has become an accepted clinical procedure. The research contributions of Guerry et al1-3 and the extremely versatile instrument developed by Meyer-Schwickerath4 have played important roles in this development. More recently optical masers have proved to be of potential value in the field of photocoagulation.In the procedure of photocoagulation, radiant energy is introduced into the eye through the pupil and concentrated by the optical system of the eye at the plane of the retina. The therapeutic effects are produced by heat concentration which results in tissue coagulation. A complete understanding of this process can be achieved only after careful measurements of the temperature changes produced in the eye. The temperature at the site of coagulation in the retina must be determined together with temperature changes in various areas of the vitreous. Scattered heat effects in the plane of the retina

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