2023 Volume 53 Pages 125-130
【Purpose】 Electroretinography using skin electrodes HE-2000 (HE-2000) manufactured by Tomey Corporation is a cutting-edge device that can simultaneously record electroretinogram (ERG) for both eyes. In this study, its usefulness in recording ERG in children with congenital nystagmus was reported.
【Subjects and Methods】The subjects were 10 children (20 eyes) with congenital nystagmus who had visited the outpatient clinic at Aichi Children's Health Medical Center between June and July 2021. In the test, the pupils were dilated and the subject was given 20 minutes for dark adaptation before the rod and flash ERGs were recorded. After 10 minutes uninterrupted light adaptation, the cone and flicker ERGs were recorded. An ophthalmologist determined whether a typical ERG waveform was recorded under each condition.
【Results】The rod and flash ERGs were successfully recorded in all the subjects (20 eyes, 100%), and the cone and flicker ERGs were successfully recorded in 9 (18 eyes, 90%) subjects. Two subjects had difficulty opening their eyelids due to photophobia, but one of them could overcome the difficulty with the examiner's comforting and finally recording was achieved smoothly.
【Conclusions】Our results revealed that HE-2000 can achieve a high success rate of recording ERG in children with congenital nystagmus and is useful for the evaluation of retinal function. Moreover, it is important that the examiner previously explains about the recording procedure in consideration of the patient's age and development to help ease the patient and obtain results smoothly.
