Three-dimensional foveal shape changes after asymptomatic macular posterior vitreous detachment

Abstract

Kazuyuki Kumagai,1 Masanori Hangai,2 Mariko Furukawa,1 Eric Larson,3 Nobuchika Ogino4 1Department of Ophthalmology, Kami-iida First General Hospital, Nagoya, Japan; 2Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan; 3Miyazaki Prefectural Nursing University, Miyazaki, Japan; 4Nishigaki Eye Clinic, Nagoya, Japan Purpose: To show a case in which the shape of the fovea changed after an asymptomatic macular posterior vitreous detachment (PVD). Methods: The foveal shape was determined from the spectral-domain optical coherence tomography (OCT) images before and after a spontaneous macular PVD. Results: A 66-year-old man with a unilateral macular hole in the right eye presented with a perifoveal PVD in the asymptomatic left eye. One year later, the left eye developed a macular PVD, and OCT measurements showed a 16.7% decrease in the central foveal thickness, and increases in the pit depth by 20.5%, foveola diameter by 14.7%, and pit volume by 19.4%. The thicknesses of the macular subfields of the Early Treatment Diabetic Retinopathy Study were decreased by 13.0% in the central subfield and by 1.4%–6.6% in the other subfields. Conclusion: The deepening and widening of the fovea after a macular PVD indicate that a PVD can alter the shape of the fovea. Keywords: posterior vitreous detachment, spectral-domain optical coherence tomography, foveal pit, macular hole