*UCLA Department of Ophthalmology Doheny Eye Institute, Los Angeles, CA
†NASA Johnson Space Center
‡KBR Inc., Houston, TX
Supported by NASA Human Research Program #NNJ11ZSA002NA (M.B.S. and B.R.M.); NASA Ocular Health Study (M.B.S. and B.R.M.); 80JSC017N0001-BPBA (B.R.M.); National Institutes of Health, Bethesda, MD [grant numbers: K08EY024674 (A.S.H.); Research to Prevent Blindness Career Development Award 2016 (A.S.H.); an unrestricted grant from Research to Prevent Blindness (UCLA) (New York, NY). The funders had no role in study design, data collection, and analysis, decision to publish, or preparation of the manuscript.
Disclosure: The authors declare no conflict of interest.