Bilateral rhegmatogenous retinal detachments with giant retinal tears.

摘要

An 8-year-old spayed, female Llasa apso dog was referred to the ophthalmology service at the Western College of Veterinary Medicine because of blindness. The menace responses were negative and the dog failed photopic and scotopic maze tests. The direct and consensual pupillary light reflexes, palpebral, and oculocephalic reflexes were present in both eyes. Schirmer tear tests (Schirmer Tear Test Strips; Alcon Canada, Mississauga, Ontario) were 28 and 23 mm/min in the right and left eye, respectively. The intraocular pressures, estimated with a rebound tonometer (Tonovet; Tiolat Oy, Helsinki, Finland), were 25 mmHg bilaterally. The pupils were dilated with tropicamide (Mydriacyl; Alcon Canada, Mississauga, Ontario), and biomicroscopic (Osram 64222; Carl Zeiss Canada, Don Mills, Ontario), and indirect ophthalmoscopic (Heine Omega 200; Heine Instruments Canada, Kitchener, Ontario) examinations were completed. Abnormalities were limited to the posterior segments bilaterally and fundic photographs (Kowa RC2, Kowa, Japan) are provided for your assessment (Figure 1). Fluorescein stain (Fluorets; Bausch & Lomb Canada, Markham, Ontario) was applied and rinsed from the corneal surfaces and the surfaces of both eyes were examined under cobalt filtered light and staining was negative.