Vision screening in schools--why, what, how and when?
D002648:Child; D003119:Color Perception Tests; D006801:Humans; D006956:Hyperopia / Q000175:diagnosis; D012572:School Health Services; D013285:Strabismus / Q000175:diagnosis; D014786:Vision Disorders / Q000517:prevention & control; D014787:Vision Tests; D014792:Visual Acuity