Acuity measurements-- do they indicate how well a partially sighted person functions of could function?
D006801:Humans; D008722:Methods; D009907:Optometry / Q000592:standards; D012029:Refraction, Ocular; D014481:United States; D014786:Vision Disorders / Q000175:diagnosis* / Q000534:rehabilitation; D014787:Vision Tests / Q000592:standards*; D014792:Visual Acuity