Americans with Disabilities Act (ADA) of 1990 (with amendments issued through 2008)

(c) QUALIFICATION STANDARDS AND TESTS RELATED TO UNCORRECTED VISION.— Notwithstanding section 12102(4)(E)(ii), a covered entity shall not use qualification standards, employment tests, or other selection criteria based on an individual’s uncorrected vision unless the standard, test, or other selection criteria, as used by the covered entity, is shown to be job-related for the position in question and consistent with business necessity.