Social Security Administration. The Social Security Administration assigns social security numbers; administers the retirement, survivors, and disability insurance programs known as Social Security; and administers the Supplemental Security Income program for the aged, blind, and disabled. SSA.
Prosopagnosia is a neurological disorder characterized by the inability to recognize faces. Prosopagnosia is also known as face blindness or facial agnosia.
Achromatopsia is the inability to see color. In the most severe form of the disease, called complete achromatopsia, the patient cannot see any color at all. Incomplete achromatopsia is a milder form of the disease where the patient has impaired ability to see color rather than a complete loss of color vision.