Published Online: August 15, 2013. doi:10.1001/jamaophthalmol.2013.4196.
Study concept and design: Mrejen, Gallego-Pinazo, Freund.
Acquisition of data: All authors.
Analysis and interpretation of data: Mrejen, Gallego-Pinazo, Freund.
Drafting of the manuscript: Mrejen, Freund.
Critical revision of the manuscript for important intellectual content: All authors.
Study supervision: Gallego-Pinazo, Wald.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported by The Macula Foundation, Inc.