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Correlation between Portable Photopic Electroretinography and Postoperative Best-Corrected Visual Acuity in Patients
Sang Eun Im1, Suk-Min Han1, Kyung Seek Choi1
1Department of Ophthalmology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea.
Purpose:
To determine the correlation between electroretinography (ERG) performed using a handheld ERG device equipped with skin electrodes and postoperative best-corrected visual acuity (BCVA) in patients with vitreous hemorrhage (VH) due to proliferative diabetic retinopathy (PDR).
Methods:
The medical records of patients who underwent vitrectomy for diabetic VH caused by PDR at our institution between July 1, 2017, and June 30, 2023, were reviewed retrospectively. We analyzed the correlation between preoperative ERG obtained using a handheld ERG device (RETeval), RETeval skin electrodes (Sensor Strips), and postoperative BCVA.
Results:
We evaluated the medical records of 70 eyes of 70 patients. The BCVA, which was measured in logMAR units, improved from 1.910 ± 0.504 preoperatively to 0.287 ± 0.225 postoperatively (p < 0.001). In the group that underwent panretinal photocoagulation before VH, the amplitudes of the b-wave in photopic ERG and 30-Hz flicker ERG were negatively correlated with the postoperative BCVA. The implicit times of the b-wave in photopic ERG and 30-Hz flicker ERG were positively correlated with the postoperative BCVA (p < 0.05).
Conclusions:
Photopic ERG recorded using a handheld retinal ERG device equipped with skin electrodes can aid in predicting the visual prognosis in patients with severe VH caused by diabetes mellitus.
