Submitted for Publication: April 20, 2014; final revision received June 3, 2014; accepted June 4, 2014.
Published Online: September 25, 2014. doi:10.1001/jamaophthalmol.2014.3501.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: Turnbull, Ramchandani.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Study supervision: Smith, Ramchandani.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.