Submitted for Publication: June 1, 2013; final revision received January 30, 2014; accepted February 9, 2014.
Published Online: May 15, 2014. doi:10.1001/jamaophthalmol.2014.877.
Study concept and design: Birnbaum, Fawzi, Goldstein.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Fawzi, Goldstein.
Statistical analysis: Rademaker.
Administrative, technical, or material support: Birnbaum, Fawzi, Goldstein.
Study supervision: Goldstein.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by an unrestricted grant from Research to Prevent Blindness.
Role of the Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.