Submitted for Publication: May 11, 2013; final revision received July 16, 2013; accepted July 21, 2013.
Published Online: December 12, 2013. doi:10.1001/jamaophthalmol.2013.6203.
Study concept and design: Schoenberger, Kim, Cherney.
Acquisition of data: All authors.
Analysis and interpretation of data: Schoenberger, Kim, Cherney.
Drafting of the manuscript: Schoenberger, Kim, Sheng, Cherney.
Critical revision of the manuscript for important intellectual content: Kim, Shah, Cherney.
Statistical analysis: Schoenberger, Kim, Cherney.
Obtained funding: Kim, Cherney.
Administrative, technical, and material support: Kim, Shah, Sheng, Cherney.
Study supervision: Kim, Cherney.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by an unrestricted grant from Research to Prevent Blindness to the Vanderbilt University School of Medicine Department of Ophthalmology and Visual Sciences.
Role of the Sponsor: The funding agency 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.