Three-dimensional spectral-domain optical coherence tomography images of the retina in the presence of epiretinal membranes

PURPOSE: To study the inner surface of the retina in the presence of epiretinal membranes (ERMs) using a prototype spectral,domain optical coherence tomography (SD-OCT) device. DESIGN: Small case series, performed in the Department of Ophthalmology, Bascom Palmer Eye Institute, Miller School of Medicine, University of Miami, from August 2005 through December 2006. METHOD: An 8-mu m axial-resolution SD OCT instrument was used to scan the eyes of patients diagnosed with ERM. The ERM and the internal limiting membrane (ILM) were segmented separately to evaluate the traction caused by the ERM on the retina. It was then possible to reconstruct the ILM and ERM surfaces in 3-dimensional space and to obtain corresponding retinal thickness maps. RESULTS: SD,OCT B scans showed the points of attachment of the ERM to the ILM. Segmented surface maps of the ERM produced very smooth sheets, whereas those of the ILM presented wrinkles under and around the ERM. CONCLUSIONS: SD-OCT revealed the geometry of retinal traction in eyes with ERM and may be useful in understanding further the pathologic features of these lesions.