Submitted for Publication: June 2, 2013; final revision received January 17, 2014; accepted January 17, 2014.
Published Online: June 19, 2014. doi:10.1001/jamaophthalmol.2014.1397.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: Miller, Brown.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Lindsell, Miller.
Administrative, technical, or material support: All authors.
Study supervision: Miller.
Conflict of Interest Disclosures: None reported.