Abstract
The purpose of this study was to evaluate the retinal function by electroretinograms (ERGs) recorded with the RETeval system using skin electrodes after pars plana vitrectomy (PPV) with gas tamponade in eyes with a rhegmatogeneous retinal detachment (RRD). Flicker ERGs were recorded from 17 eyes with an RRD before (baseline), within 2 weeks after the PPV when the size of the tamponade gas was approximately one-half of the vitreous cavity (P1), and when the gas had been completely absorbed (P2). The amplitudes of the flicker ERGs at each phase were compared to that at the baseline. The median (25th, 75th percentile) of the amplitude was 10.0 µV (5.5, 13.0 µV) at the baseline, 11.7 µV at P1 (7.8, 14.8 µV; P = 0.003), and 17.1 µV at P2 (11.7 23.3 μV; P < 0.001). The ratio of the amplitudes in the affected eye to that in the fellow eye at the baseline and at each phase was calculated, and the ratio of the amplitudes at P1 and P2 were significantly and positively correlated (P = 0.723, P = 0.001; Spearman’s rank correlation coefficient). We conclude that recordings the flicker ERGs with skin electrodes can be used to assess the physiology of eyes even with the vitreous cavity half-filled with the gas used to tamponade the retina.
Highlights
A retinal detachment (RD) is a serious eye disorder that can lead to blindness[1,2], and a rhegmatogenous RD (RRD) is the most common form of RD
We investigated the effect of vitreous surgery on the ERGs of eyes with an rhegmatogeneous retinal detachment (RRD) during the early postoperative period
Many authors have used ERGs to assess the outcome of reattachment surgery in eyes with a RRD, but most of these studies were on eyes that had undergone scleral buckling surgery[5,6,8,9,10,11,12]
Summary
A retinal detachment (RD) is a serious eye disorder that can lead to blindness[1,2], and a rhegmatogenous RD (RRD) is the most common form of RD. Several authors have assessed the physiological status of the retina of eyes with an RRD before and after surgery by full-field ERGs or multifocal ERGs (mfERG)[5,6,7,8,9,10,11,12]. Many of these studies evaluated the retina after scleral buckling surgery and a fewer number of studies after pars plana vitrectomy (PPV). The purpose of this study was to determine whether the RETeval system can be used to record ERGs to assess the physiology of the retina soon after RRD surgery with a gas tamponade. The 30 Hz stimuli of the RETeval system elicits photopic ERGs
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