Pesquisa Veterinária Brasileira | |
Normal values of b-wave responses of full-field electroretinogram in Lhasa Apso dogs with cataracts according to age | |
Ana C.a. Góes1  Tatiane Villar1  Denise A. Otsuki1  Ricardo Lisak1  Ricardo A. Pecora1  Angélica M.v. Safatle1  | |
关键词: Electroretinogram; cataract; dogs; Lhasa Apso.; Eletrorretinograma; catarata; caninos; LhasaApso.; | |
DOI : 10.1590/S0100-736X2015000300011 | |
来源: SciELO | |
【 摘 要 】
Lhasa Apso dogs with immature, mature or hypermature cataracts were divided into four groups according to their age (G1: 1 to 3 years old, G2: 4 to 7 years old, G3: 8 to 11 years old, G4: more than 12 years old). All animals were evaluated under the same sedation protocol to allow the performance of the electroretinogram (ERG) exam to determine normal value of b-wave response of the full-field ERG according to age. Three ERG responses were recorded: rod, maximal and cone responses. The amplitude values and b-wave implicit time of the responses of all groups were compared and analyzed by Kruskal-Wallis test (variance analysis for non-repeated measures), followed by the Dunn post-test (when p<0,05). A significant decrease was observed in maximal responses' amplitude, when comparing the G4 group with G1 and G2. No statistically relevant differences were observed in the b-wave implicit time values between groups. The ERG values are directly influenced by the animal's age. Older patients presented a decrease in the amplitude of the maximal response. The study determined the normal parameters of ERG b-waves for Lhasa Apso dogs with cataract according to their age group.
【 授权许可】
CC BY-NC
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