Submitted for Publication: November 3, 2014; final revision received February 25, 2015; accepted March 10, 2015.
Published Online: May 14, 2015. doi:10.1001/jamaophthalmol.2015.1110.
Study concept and design: Zheng, Wu, Foster, Wong, Aung.
Acquisition, analysis, or interpretation of data: Baskaran, Foo, Cheng, Narayanaswamy, Zheng, Saw, Foster, Aung.
Drafting of the manuscript: Baskaran, Foo, Zheng, Wu, Wong, Aung.
Critical revision of the manuscript for important intellectual content: Baskaran, Foo, Cheng, Narayanaswamy, Zheng, Wu, Saw, Foster, Aung.
Statistical analysis: Baskaran, Wu, Aung.
Obtained funding: Wong, Aung.
Administrative, technical, or material support: Foo, Cheng, Zheng, Wu, Aung.
Study supervision: Saw, Foster, Aung.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: This study was supported by the National Medical Research Council and National Research Foundation, Singapore.
Role of the Funder/Sponsor: The funding sources 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.