aVanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, Tennessee bOlive View Medical Center, University of California Los Angeles, Los Angeles, California cBascom Palmer Eye Institute at the University of Miami Miller School of Medicine, Miami, Florida, USA Correspondence to Avni P. Finn, MD, MBA, Assistant Professor of Ophthalmology, Medical Director of Imaging, Assistant Program Director, Vitreoretinal fellowship, Vitreoretinal Diseases and Surgery, Vanderbilt Eye Institute, 2311 Pierce Avenue, Nashville, TN 37232, USA. Tel: + 1 615 421 1970; fax: +1 615 936 1540; e-mail: [email protected]