Optometric experience in Guatemala.
D000328:Adult; D002648:Child; D002675:Child, Preschool; D005128:Eye Diseases / Q000175:diagnosis; D005260:Female; D006166:Guatemala; D006801:Humans; D007199:Indians, South American; D008297:Male; D009907:Optometry; D012030:Refractive Errors / Q000534:rehabilitation; D008921:Religious Missions