Purpose: To study the natural course of changes observed in the retinal pigment epithelium (RPE) on spectral domain OCT transverse and RPE fit C-scans corresponding to the leakage point observed on fundus fluorescein angiograms in central serous chorioretinopathy (CSC).
Methods: Thirteen patients with acute CSC were prospectively enrolled and followed up for 6 months. All were examined using Zeiss Cirrus HD-OCT Model 4000. Transverse and RPE fit C-scans corresponding to point of leakage were superimposed on an OCT fundus photograph and correlated with the leakage point on a fluorescein angiogram. The RPE alterations observed at the leakage point were noted at presentation and follow-up.
Results: Transverse and RPE fit C-scans showed an irregularity of RPE resembling a 'honeycomb' pattern in 11 (85%) eyes at the point corresponding to the fluorescein leakage site. These were observed as pigment epithelium detachment (PED) on Raster line scan. Six of these 11 eyes (54.5%) showed a disruption/breach in the RPE on transverse C-scan and on RPE fit C-scan. All eyes showed a resolution of subretinal fluid with a closure of microrip, and the honeycombed pattern at the leakage site was replaced with RPE hypertrophy.
Conclusion: RPE microrips show spontaneous closure in the natural course of CSC.