Pattern electroretinography in patients with unilateral acute central serous chorioretinopathy

Abstract

Background To evaluate the pattern electroretinography (PERG) in patients with acute central serous chorioretinopathy (CSCR) at baseline and after spontaneous resolution. Methods A total of 32 patients (mean ± SD age: 38.8 ± 8.2 years, 71.9 per cent female) with unilateral acute CSCR and spontaneous resolution during follow‐up period were included. The unaffected eyes of the study patients comprised the control group. The best‐corrected visual acuity, PERG and optical coherence tomography findings were recorded both at baseline and following spontaneous resolution at two to four months. Results The P50 and N95 amplitudes of the affected eyes were significantly lower than the control group both at baseline and after CSCR resolution (p < 0.001 for each). A significant increase was noted in both P50 and N95 amplitudes of the affected eyes from baseline to post‐resolution (p < 0.001 for each). Subfoveal choroidal thickness was significantly higher in the affected eyes as compared with control eyes both at the baseline and after CSCR resolution along with a significant decrease in the affected eyes from baseline to post‐resolution (p < 0.001 for each). The central retinal thickness was higher in the affected eyes as compared with the control eyes at baseline (p = 0.009), along with a significant decrease in the affected eyes from baseline to post‐resolution (p < 0.001). Between the baseline P50 amplitude and the visual acuities of the affected eyes, a strong correlation was noted at baseline (r = −0.691, p < 0.001) and a moderate correlation was noted after CSCR resolution (r = −0.422, p = 0.031). Conclusions In conclusion, our findings revealed an association of CSCR with impaired P50 and N95 amplitudes and a significant improvement but not a complete recovery in both parameters after CSCR resolution. Our findings emphasise potential utility of PERG in the electrophysiological evaluation of functional impairment in CSCR patients and the likelihood of P50 amplitude to have a prognostic value in CSCR.

Ganglion Cell Loss in the Course of Central Serous Chorioretinopathy

“…That finding is consistent with our results and proves mainly photoreceptor damage in acute CSCR cases and minor GC involvement. On the other hand, analysis of acute CSCR cases by Doguizi et al showed decreases in both P50 and N95 waves that improved but still persisted after resolution of CSCR [ 38 ]. That result indicates GC deficit even in acute CSCR.…”