Analysis of retinal sensitivity between acute and recurrent central serous chorioretinopathy by microperimetry

To evaluate the retinal sensitivity of macular region in acute and recurrent central serous chorioretinopathy (CSCR) using microperimetry. This was a retrospective observational study. Twenty-five eyes of 25 subjects diagnosed with either acute or recurrent CSCR without any previous treatment were included in this study. All subjects underwent complete ophthalmological examinations, including central retinal thickness (CRT) using spectral domain OCT and the retinal sensitivity assessments of macular region using microperimeter MP-3. The mean global macular sensitivity (GMS) of 64 loci in the 20° central macular area and the local macular sensitivity (LMS) of the test locations in affected region of serous retinal detachment (SRD) were analyzed. Twelve eyes of 12 subjects with acute CSCR (Group A) and 13 eyes of 13 subjects with recurrent CSCR (Group R) were enrolled. Clinical parameters, including age, duration, mean LogMAR best-corrected visual acuity and CRT, were not statistically significant (p = 0.688, 0.080, 0.222, 0.394, respectively) between Group A and Group R. There were significant differences in the GMS and LMS between the two groups. Compared to group A (24.9 ± 1.6 dB), the mean GMS of group R was significantly (p = 0.018) lower (23.0 ± 2.0 dB). Furthermore, the mean LMS of group R (20.8 ± 3.4 dB) was also significantly lower (p = 0.026) than that of group A (22.3 ± 3.1 dB). Recurrent CSCR often show worse retinal function in focal areas of the affected macular areas than in acute CSCR. Microperimetry may be a promising method for distinguish between the acute and recurrent CSCR.