This study aimed to determine normal electroretinogram (ERG) parameters in healthy domestic shorthair (DSH) cats. Normal ERG in seventeen DSH cats was recorded using the QuickRetCheck protocol, a very short method to assess retinal function, of the Handheld Multispecies eletroretinography (HMsERG). Scotopic ERGs were recorded in cats under tiletamine-zolazepam and isoflurane anesthesia. At low light intensity (10 mcd.s/m2) stimulation which determined the rod photoreceptor function, a-wave could not be detectable while the mean±standard error of b-wave amplitude and implicit time were 96.26 ± 5.98 μV and 64.66 ± 0.83 msec, respectively. At standard light intensity (3,000 mcd.s/m2), the mean a-wave amplitude and implicit time were 67.10 ± 4.08 μV and 16.20 ± 0.29 msec and the mean b-wave amplitude and implicit time were 413.38 ± 12.89 μV and 41.21 ± 0.95 msec, respectively. At high light intensity (10,000 mcd.s/m2) the mean a-wave amplitude and implicit time were 92.04 ± 5.03 μV and 15.49 ± 0.29 msec and the mean b-wave amplitude and implicit time were 444.34 ± 13.73 μV and 35.91 ± 0.94 msec, respectively. The b/a ratios of standard and high light intensity stimulation were 6.76 ± 0.39 and 5.09 ± 0.22, respectively. The present study successfully established normal ERG parameters in DSH cats
Faculty of Veterinary Science, Chulalongkorn University
Sussadee, Metita; Phavaphutanon, Janjira; Ubolrat, Kanthapan; and Thayananuphat, Aree
"Normal Electroretinogram in Domestic Shorthair Cats Using a Short Protocol of HMsERG,"
The Thai Journal of Veterinary Medicine: Vol. 44:
2, Article 10.
Available at: https://digital.car.chula.ac.th/tjvm/vol44/iss2/10