72
Participants
Start Date
August 31, 2006
Primary Completion Date
October 31, 2009
Study Completion Date
October 31, 2009
Autorefractor, standard clinical instrument
Autorefractor, standard clinical instrument was used to assess the children's focusing power at near.
Eutaw Primary School, Eutaw
National Eye Institute (NEI)
NIH
University of Alabama at Birmingham
OTHER