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BUMGI KIM, Jae Suk Kim, Won Hyuk Oh, Jae Yong Park, Miryoung Song, Je Hyung Hwang; Comparison of electroretinography measurements between tabletop and handheld stimulators in healthy subjects. Invest. Ophthalmol. Vis. Sci. 2019;60(9):2495.
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© ARVO (1962-2015); The Authors (2016-present)
To compare full field electroretinography (ffERG) parameters obtained from handheld and tabletop ERG devices in normal subjects
Twenty volunteers were subjected to ffERG. The responses were recorded with the two stimulators, and the results obtained from the right eyes of the 20 participants were compared
The b-wave in the rod response, a- and b- waves in the maximal combined response, a-wave in the cone response, and the 30-Hz flicker response showed significantly greater amplitudes when recorded with a tabletop stimulator than with the handheld stimulator. The implicit time of response (ITR) in the 30-Hz flicker response was longer when recorded with the handheld stimulator than with the tabletop stimulator. According to the ICC with regard to amplitude, the two stimulators showed moderate-to-high reliability in the measurement of the b-wave in the rod response and a- and b- waves in the maximal combined response. With regard to the ITR, the reliability of measurement of the b-wave in the rod response and a-wave in the maximal combined response was moderate to high.
Relative to a tabletop stimulator, a handheld stimulator resulted in lower ERG amplitude measurements, although there were no significant differences in variability between the two stimulators
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.
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