Slow fade. Help for low vision.
D000203:Activities of Daily Living; D000368:Aged; D000375:Aging; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D015354:Vision, Low / Q000517:prevention & control*; D014792:Visual Acuity; D019987:Persons with Visual Disabilities / Q000534:rehabilitation*