Characterization of ectopic myelinated nerve fibers in the retina of a cynomolgus monkey (Macaca fascicularis).

We report histopathology of retinal myelination discovered in a cynomolgus monkey. It consisted of a uniform population of spindle cells arranged in fascicles within the retina at the optic disk. The present case is remarkable in that there is a paucity of reports describing myelinated retinal nerve fibers in monkeys.