Submitted for Publication: November 20, 2011; final revision received April 9, 2012; accepted April 23, 2012.
Published Online: June 11, 2012. doi:10.1001 /archophthalmol.2012.1596
Author Contributions: Drs Choi and Rosenbaum share senior authorship.
Financial Disclosure: None reported.
Funding/Support: This work was supported by Research to Prevent Blindness, a core grant from the National Eye Institute, and funds from the Stan and Madelle Rosenfeld Family Trust, the William and Mary Bauman Foundation, and the William C. Kuzell Foundation.
Online-Only Material: This article is featured in the Archives Journal Club. Go to here to download teaching PowerPoint slides