Study concept and design: Lally, Baumal.
Acquisition, analysis, or interpretation of data: Lally, Baumal.
Drafting of the manuscript: Lally, Baumal.
Critical revision of the manuscript for important intellectual content: Lally, Baumal.
Statistical analysis: Lally, Baumal.
Administrative, technical, or material support: Lally.
Study supervision: Baumal.
Conflict of Interest Disclosures: None reported.
Funding/Support: This work was supported in part by an unrestricted award to the New England Eye Center, Tufts University School of Medicine from Research to Prevent Blindness.
Role of the Sponsor: Research to Prevent Blindness was involved in the design and conduct of the study but had no role in collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.