Effect of light and visual deprivation on the retina

Citation:
Fifková, E. "Effect of light and visual deprivation on the retina." Experimental Neurology. 35 (1972): 450-457.

Abstract:

The effect of light and unilateral visual deprivation (achieved by lid-suturing) on the retina of albino rats has been studied. Lid-sutured and unoperated animals were illuminated daily for 8, 11, or 16 hrs. With increasing time of illumination a progressive decrease in thickness of the outer retinal layers was observed in undeprived animals and in the open eye of the monocularly deprived rats. The shrinkage was greater in the outer plexiform than in the outer nuclear layer. In the lid-sutured eye considerably less change was found in the outer nuclear layer. The difference in thickness of the outer retinal layers of the sutured and companion open eye was 2.5 times greater after 16 than after after 8 hr of light exposure. The loss of receptors seems to be a function of the length of illumination. The decrease in thickness of the outer retinal layers in the open eye of the deprived animals was greater than in the undeprived ones suggesting that more light enters the former eye. It was assumed that an animal which has only one eye available keeps it open for longer periods of time than when both eyes are used.

Notes:

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