Ocular Protothecosis in a Dog

Abstract

Prototheca organisms were observed in both eyes of a collie dog. The dog was blind, and the vitreal space of each eye was filled with gray-white material. Nongranulomatous endophthalmitis was seen in both eyes and in one eye posterior synechia and hemorrhage were observed. The retinas were totally detached by exudate. Various amounts of exudate consisting mostly of protothecal cells were present within and above the choroid. Also, exudate teeming with organisms was attached to the choroidal aspect of the detached retinas. In one eye infection extended into and about the optic nerve.