Grating Visual Acuity in phakic, aphakic, and pseudophakic Poodles.

Autor: Safatle AMV; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., de Moraes TA; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., Eyherabide AR; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., Fernandes AG; Biosciences Institute, São Paulo University, Sao Paulo, Brazil.; School of Medicine, Federal University of São Paulo, Sao Paulo, Brazil., Jorge JS; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., Carvalho LMCR; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., Rodriguez EAK; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., Otsuki D; LIM08-Laboratory of Anesthesiology, Faculdade de Medicina, Universidade de São Paulo, Sao Paulo, Brasil., Bolzan AA; Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), São Paulo University, Sao Paulo, Brazil., Sacai PY; School of Medicine, Federal University of São Paulo, Sao Paulo, Brazil.
Jazyk: angličtina
Zdroj: Veterinary ophthalmology [Vet Ophthalmol] 2020 Sep; Vol. 23 (5), pp. 879-883. Date of Electronic Publication: 2020 Aug 21.
DOI: 10.1111/vop.12813
Abstrakt: Objective: To compare the grating visual acuity (VA) measured by visual evoked potentials (VEP) in phakic, aphakic, and pseudophakic Poodles.
Animals Studied: Thirty-six Poodle dogs aged from 4 to 14 years.
Procedures: Animals were allocated into three different groups according to their lens status: phakic group (n = 12), aphakic group (n = 12), and pseudophakic group (n = 12). Grating VA was measured in cycles/degree (cpd) in all animals using the electrodiagnosis system Roland RETIport ® in a dark room without using any mydriatic, sedative, or anesthetic drugs.
Results: The mean grating VA in the phakic, aphakic, and pseudophakic groups was 5.9 ± 1.0 cpd (20/102-Snellen equivalent), 2.6 ± 0.7 cpd (20/231), and 5.2 ± 1.1 cpd (20/116), respectively. The VA from aphakic eyes was significantly lower when compared to the phakic and pseudophakic eyes (P < .05). There was no significant difference in VA between phakic and pseudophakic eyes.
Conclusions: The VEP is a useful tool for the evaluation of grating visual acuity in canines. The study showed that IOL implantation following phacoemulsification results in improved VA as measured by VEP compared to that of the aphakic eye and resulted in VA that was similar to that of the normal eye.
(© 2020 American College of Veterinary Ophthalmologists.)
Databáze: MEDLINE
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