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Thickness of the retinal nerve fiber layer is studied in the eyes of three primate species. Measurements are made at various points throughout the fundus, including the peripapillary, arcuate, macular (area centralis), equatorial, and peripheral parts of the retina. Anatomic findings are compared with the clinical appearance of retinal light reflexes in these way. It is proposed that the nature of this light reflex is, in part, determined by the thickness of the retinal nerve fiber layer.
Ronald L. Radius (Mon,) studied this question.