Funding for this research was provided by:
National Multiple Sclerosis Society (RG-1506-04890)
National Institute for Health Research (center grant P30EY014801)
Research to Prevent Blindness
Received: 11 February 2018
Accepted: 2 June 2018
First Online: 17 June 2018
Ethics approval and consent to participate
: All research methods are in accordance with the tenets of the Declaration of Helsinki and approved by the ethics committee board of the University of Miami. All subjects were recruited voluntarily and were informed about the purposes, methods, and the potential risks of the study. A signed consent form was obtained from each volunteer.
: All study subjects gave informant consent.
: The authors declare that they have no competing interests.