1 Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland; Dana Center for Preventive Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
2 Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland; Dana Center for Preventive Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, Maryland; Berman Institute of Bioethics, Johns Hopkins University, Baltimore, Maryland. Electronic address: mcolli36@jhmi.edu.
3 Illinois College of Optometry, Chicago, Illinois.
4 Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland.
5 Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts.