Submitted for Publication: December 20, 2014; final revision received March 20, 2015; accepted March 23, 2015.
Published Online: May 28, 2015. doi:10.1001/jamaophthalmol.2015.1447.
Study concept and design: Afifi, Caprioli.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Chen, Afifi, Caprioli.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Chen, Aigner, Afifi, Caprioli.
Obtained funding: Caprioli.
Administrative, technical, or material support: Chen, Kim.
Study supervision: Caprioli.
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 work was supported by a grant from the American Academy of Ophthalmology.
Role of the Funder/Sponsor: The funder 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.
Additional Contributions: We thank the members of the American Academy of Ophthalmology Committee for Practice Improvement (Anthony C. Arnold, MD, Department of Ophthalmology, David Geffen School of Medicine, University of California Los Angeles; Steven V. L. Brown, MD, Chicago Glaucoma Consultants, Chicago, Illinois; David A. Durfee, MD, American Academy of Ophthalmology, San Francisco, California; Bradley D. Fouraker, MD, Brandon Cataract Center and Eye Clinics, Brandon, Florida; James C. Orcutt, MD, PhD, Department of Ophthalmology, University of Washington, Seattle; and Beth Wilson, American Academy of Ophthalmology, San Francisco, California) for their contributions to the development of the efficiency index; no compensation was received for these contributions.