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To investigate potential clinical and multimodal imaging factors in central serous chorioretinopathy (CSC) recurrence.The study was performed at nine Japanese medical institutions for patients who had experienced an active CSC episode. Demographic data and medical history were reviewed retrospectively. Significant differences in chronic manifestation, leakage site, leakage point number, leakage intensity, choroidal hyperpermeability, central retinal thickness (CRT) and subfoveal choroidal thickness were analysed between the recurrence and non-recurrence groups.In total, 538 eyes (538 patients) diagnosed with CSC (402 men, 136 women; mean age: 53.4 ± 11.9 years) were enrolled. Among them, 253 eyes (47.0%) developed ≥1 recurrence (follow-up: 15.9 ± 13.5 months, range 3-86 months). Univariate and multivariate analyses indicated that a history of corticosteroid use (odds ratio [OR], 5.52; 95% confidence interval [CI], 1.39-21.92; p = 0.015), bilateral disease (OR, 3.94; 95% CI, 1.47-10.6; p = 0.007), chronic manifestations (OR, 7.12; 95% CI, 2.93-17.28; p 0.001), non-intense fluorescein leakage (OR, 3.34; 95% CI, 1.44-7.75; p = 0.005) and initial CRT (OR, 0.997; 95% CI, 0.993-0.999; p = 0.049) were significantly associated with CSC recurrence. Receiver operating characteristic curves were created, and the area under the curve for the multivariate logistic regression model of these five factors was 0.814.Patients with CSC who received corticosteroids and had bilateral disease, chronic manifestation, non-intense fluorescein leakage on fluorescein angiography or a relatively thinner CRT should be closely monitored to identify whether they are at high risk of recurrence.

Background A new handheld electroretinographic (ERG) recording system can record ERGs without mydriasis. However, this RETeval system cannot record ERGs from both eyes simultaneously. Thus, the purpose of this study was to determine whether the sequence of the ERG recordings will alter the results. Methods We studied 30 eyes of 30 healthy subjects. The flicker ERGs were recorded with the RETeval system without mydriasis and were elicited by 8, 16 and 32 photopic Td‐s. The flicker ERGs were recorded at two sessions. Session 1, the ERGs were recorded from the right eye and then the left eye, and Session 2, ERGs were recorded from the left eye then the right eye. We compared the implicit times, amplitudes and pupil diameters of the right eye between these two sessions. Results The implicit time of the flicker ERGs was significantly shorter (p