Retinal Pigment Epithelial Detachments Devoid of Retinal Pigment Epithelium.

Abstract

To describe two patients with chronic central serous chorioretinopathy (CSC) showing what appeared to be retinal pigment epithelium detachments (PED) lacking imaging findings consistent with retinal pigment epithelium (RPE) over the elevation. The patients underwent comprehensive ophthalmic examination, including multicolor fundus photography, fundus autofluorescence (FAF), and spectral-domain optical coherence tomography (SD-OCT). A 70-year-old male and a 58-year-old male, both diagnosed with chronic CSC, showed PED-like lesions that were hypoautofluorescent, suggesting an absence of RPE. SD-OCT B-scans showed serous, dome-shaped elevations composed of a narrow, mildly hyperreflective band (9-10 μm thick) that demonstrated hypertransmission of light. The material that constituted the elevation was contiguous with the outer portion of the RPE band at the lesion borders. Based on the multimodal imaging findings we hypothesize that these elevations of the retina have lost their overlying RPE. A thin layer of material that could represent a residual layer of basal laminar deposit produced by the RPE remains overlying the detachments, possibly accounting for their dome shape and structural stability.