1 College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR.
2 Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR.
3 Department of Emergency Medicine, Arkansas Children's Hospital, Little Rock, AR.
4 Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR; Department of Ophthalmology, Boston Children's Hospital, Boston, MA.