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

(E)

(i) The determination of whether an impairment substantially limits a major life activity shall be made without regard to the ameliorative effects of mitigating measures such as—

(I) medication, medical supplies, equipment, or appliances, low-vision devices (which do not include ordinary eyeglasses or contact lenses), prosthetics including limbs and devices, hearing aids and cochlear implants or other implantable hearing devices, mobility devices, or oxygen therapy equipment and supplies;

(II) use of assistive technology;

(III) reasonable accommodations or auxiliary aids or services; or

(IV) learned behavioral or adaptive neurological modifications.

(ii) The ameliorative effects of the mitigating measures of ordinary eyeglasses or contact lenses shall be considered in determining whether an impairment substantially limits a major life activity.

(iii) As used in this subparagraph—

(I) the term ‘ordinary eyeglasses or contact lenses’ means lenses that are intended to fully correct visual acuity or eliminate refractive error; and

(II) the term ‘low-vision devices’ means devices that magnify, enhance, or otherwise augment a visual image.