aBascom Palmer Eye Institute, University of Miami Miller School of Medicine

bMiami Veterans Administration Medical Center, Miami, Florida, USA

Correspondence to Kara M. Cavuoto, MD, Professor of Clinical Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, 900 NW 17th St, Miami, FL 33136, USA. Tel: +1 305 326 6324; fax: +305 547 3675; e-mail: [email protected]