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Thesis

Infrared fundus photography

10 February 1978

Abstract

Color infrared fundus photographs were made of normal and pathological eyes. These were compared to conventional fundus photographs of the same eyes. Skilled judges rated the visibility of selected fundus features. Infrared photography produces pictures with false color, altered contrast and increased tissue penetration. These characteristics of infrared film were found to be useful in visualizing the choroidal vessel pattern, showing areas of extensive exudates and retinal atropgy, and showing fundus changes deep to the retina. A convenient method of focusing for infrared pictures was found and an explanation of the reported variations in the color renditions of infrared photographs is suggested.


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