Reading aids for the partially sighted. Factors which determine success or failure.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001877:Books; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D055095:Optics and Photonics; D014786:Vision Disorders / Q000534:rehabilitation*