Influence of recording electrode type and reference electrode position on the canine electroretinogram

Documenta Ophthalmologica. Advances in Ophthalmology
Alice E MentzerSimon M Petersen-Jones

Abstract

Electroretinography is commonly used to assess the functional integrity of the retina. There are many external variables that can influence the electroretinographic waveforms recorded, and it is important to be aware of these so as not to misinterpret their effects as abnormalities in retinal function. In this study we examined the effect of three different recording electrodes on the ERGs recorded from normal dogs. A bipolar Burian-Allen lens, a monopolar Dawson Trick Litzkow (DTL) fiber electrode, and a monopolar ERG-Jet lens electrode were compared. The effect of altering the distance of the reference electrode from the eye was also examined; using the ERG-Jet lens electrode, the ERG was recorded with the reference electrode placed over the zygomatic arch at 1, 3 and 5 cm caudal to the lateral canthus. The ERGs recorded with the bipolar Burian-Allen lens had significantly lower amplitudes, higher a-wave thresholds and a shallower initial a-wave slope, than those recorded by the two monopolar electrodes. Positioning the reference electrode further from the eye resulted in significantly higher amplitudes. Naka-Rushton fitting and calculation of retinal sensitivity (K) gave significantly different results between the Burian-All...Continue Reading

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Citations

Nov 26, 2010·The Journal of Veterinary Medical Science·Man Bok JeongKang Moon Seo
Jun 28, 2013·American Journal of Veterinary Research·Kate S FreemanRon Ofri
Jun 2, 2007·Documenta Ophthalmologica. Advances in Ophthalmology·Keqing ZhangBo Lei
Jun 4, 2013·Documenta Ophthalmologica. Advances in Ophthalmology·Björn EkestenKristina Narfström
Mar 11, 2015·Veterinary Ophthalmology·Christopher J Dixon
Dec 3, 2008·Veterinary Ophthalmology·Joanna C NormanPaul M Barrett
Sep 25, 2010·Veterinary Ophthalmology·Fabiano Montiani-FerreiraRogério R Lange
Nov 16, 2010·Journal of Neuroscience Methods·A SchatzF Gekeler
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Feb 8, 2013·Journal of Veterinary Science·Yoshiki ItohYasuharu Izumisawa
Oct 2, 2014·Journal of Veterinary Science·Metita SussadeeAree Thayananuphat
Aug 19, 2009·Journal of Veterinary Science·June-sub LeeSoon-wuk Jeong
Mar 21, 2020·Veterinary Ophthalmology·Nathaniel Pasmanter, Simon M Petersen-Jones
Feb 23, 2017·Documenta Ophthalmologica. Advances in Ophthalmology·A KurtenbachH Langrová
Jan 8, 2021·Veterinary Ophthalmology·Shaotong TuJiahao Lin

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