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May 1965

Biomicroscopy of the Vitreous in Collie Dogs With Fundus Abnormalities

Author Affiliations

From the Department of Clinical Eye Research, Institute of Biological and Medical Sciences, Retina Foundation.

Arch Ophthalmol. 1965;73(5):700-706. doi:10.1001/archopht.1965.00970030702020

Rhegmatogenous * retinal detachment, retinal breaks, developmental abnormalities, degeneration of the peripheral retina, juxtapapillary staphyloma, chorioretinal dysplasia, and retinoschisis have been described in several breeds of dog.1-5 To determine whether clinically detectable changes in the vitreous body are related to these conditions, the vitreous cavities of 24 affected collies were examined in detail. This paper is a description of the biomicroscopic findings and their correlation with the fundus abnormalities previously reported in these animals.1

Materials and Methods  The collies, 9 males and 15 females, ranged in age from 5 months to 4 years. A complete fundus drawing was made of each of the 48 eyes and was used as a guide for study of the vitreous with the Zeiss Opton slit lamp and a three-mirror contact lens. When a small palpebral fissure precluded the use of the standard three-mirror lens, an especially designed contact lens with an adjustable mirror