Complete ophthalmic examinations of both eyes of 100 retired racing Greyhounds were performed.
Anterior segment examinations were performed by slit-lamp biomicroscopy. Tear production was measured by Schirmer tear test. Intraocular pressures were obtained by applanation tonometry. The posterior segments were examined by binocular indirect ophthalmoscopy following pharmacologic dilation. A photographic record of abnormalities was obtained whenever possible.
Results: Mean tear production by Schirmer tear test was 21 mm/min (range 11–30 mm/min). Mean intraocular pressure by applanation tonometry was 16 mmHg (range 9–28 mmHg). The most prevalent anterior segment findings were cataracts (17% dogs, 11% eyes), corneal degeneration/scarring (6% dogs, 4% eyes), and suspected typical and atypical ‘pannus’ (total 4% dogs, 4% eyes).
The most prevalent posterior segment abnormalities were vitreal degeneration (31% dogs, 38% eyes) and chorioretinal degeneration/scarring (7% dogs, 4% eyes).
Other findings included anterior chamber vitreal strands, stretched lens zonules, periocular alopecia, a case of mild unilateral chemosis, and a distichium.
Source: Gwendolyn L. Lynch (2007): Ophthalmic examination findings in a group of retired racing Greyhounds. In: Veterinary Ophthalmology 10 (6), 363–367.
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