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OUTER RETINAL FOLDS/CORRUGATIONS

Originally posted on @retina.rocks 06/07/2023

This 51YO male presented with this acute temporal macula-off rhegmatogenous retinal detachment (RRD). Vision was 20/200.

Optos color RGB imaging shows an RRD with corrugated outer retinal folds. These folds are best seen with the green channel. Swept-source OCT shows how these findings involve just the outer retina. The detachment was repaired with vitrectomy the following day.

Learning Points:
Hydration of outer retinal folds are one of the key findings to help differentiate a RRD from exudative and traction retinal detachments.

The cause for these folds remains uncertain, but they may form as the result of hydration of glycosaminoglycans in the interphotoreceptor matrix (Dalvin et al, Retinal Cases & Brief Reports 2020;14;355-359).