Refractive state using streak retinoscopy of phakic eyes in dogs
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Authors
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Rakesh Mishra
Post Graduate Institute of Veterinary Education and Research, Jaipur- 302 031 (Rajasthan)
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Y.P. Singh
Post Graduate Institute of Veterinary Education and Research, Jaipur- 302 031 (Rajasthan)
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M.C. Parashar
Post Graduate Institute of Veterinary Education and Research, Jaipur- 302 031 (Rajasthan)
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C.S. Saraswat
Post Graduate Institute of Veterinary Education and Research, Jaipur- 302 031 (Rajasthan)
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D.S. Meena
Post Graduate Institute of Veterinary Education and Research, Jaipur- 302 031 (Rajasthan)
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N. Kumawat
Post Graduate Institute of Veterinary Education and Research, Jaipur- 302 031 (Rajasthan)
Keywords:
Dog, Emmetropia, Hyperopia, Myopia, Refractive error, Streak retinoscopyAbstract
Refractometry was performed on 40 eyes of 20 clinically healthy dogs of different breeds and both sexes using a handheld streak retinoscope. Pupillary dilation was achieved with 1% cyclopentolate ophthalmic solution. Based on the net spherical refractive error, the eyes were classified as emmetropic (57.50%, n=23), hyperopic (12.50%, n=5), or myopic (30.00%, n=12). No significant difference was observed between the refractive errors of the right and left eyes (P=0.219). The mean net spherical refractive errors of both eyes indicated the overall refractive status of the dogs, revealing that 55% (n=11) were emmetropic, 30% (n=6) were myopic, and 15% (n=3) were hyperopic. Furthermore, a significant positive correlation was observed between refractive error and the age of the dogs (P=0.003).
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