Morphologic Features of Group 2A Idiopathic Juxtafoveolar Retinal Telangiectasis in Three-Dimensional Optical Coherence Tomography

PurposeTo investigate morphologic features of group 2A idiopathic juxtafoveolar retinal telangiectasis (IJRT) with three-dimensional optical coherence tomography (OCT).DesignObservational case series.MethodsWe performed OCT ophthalmoscopy on six eyes of three consecutive patients with group 2A IJRT.ResultsThin cystic low-intensity space within inner and outer retinal layers was detected with the longitudinal B-scan through the fovea in five eyes. Partial loss of highly reflective line considered as the boundary between photoreceptor inner segments and outer segments was also detected. The transverse C-scan provided en-face images of the low-intensity space shown with the B-scan, if not entirely. These morphologic alterations appeared not to correspond with the staining observed in the late phases of fluorescein angiography.ConclusionsThe OCT ophthalmoscope could visualize morphologic alterations indicating degeneration or atrophy of neurosensory retina, including photoreceptor layers. These alterations may play a role in the pathogenesis of group 2A IJRT.