Functional visual disability

1. Contrast sensitivity predicts functional visual disability in humans (Sensitivity 67% (95% CI 62%–71%); specificity 70% (95% CI 69%–72%)).

   “A threshold of 1.60 logCS maximized discrimination for functional visual disability (sensitivity, 67% [95% CI, 62%-71%]; specificity, 70% [95% CI, 69%-72%]).”

   HumansThreshold of 1.60 logCSn = 4,475

   A Clinically Relevant Threshold of Impaired Contrast Sensitivity Among Older US Adults

   JAMA ophthalmology·28 May 2026

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