DISABLED PERSON
A person who has the total and permanent inability, to engage
in any substantial gainful activity by reason of any medically determinable
physical or mental impairment including blindness, and shall include,
but not be limited to, any individual who is disabled pursuant to
the federal Social Security Act (421 U.S.C. § 416), or the
federal Railroad Retirement Act of 1974 (45 U.S.C. § 231
et seq.,), or is rated as having a sixty-percent disability or higher
pursuant to any federal law administered by the United States Veterans'
Act. For the purposes of this article, "blindness" means central visual
acuity of 20/200 or less in the better eye with the use of correcting
lens. An eye which is accompanied by a limitation in the fields of
vision such that the widest diameter of the visual field subtends
an angle no greater than 20º shall be considered as having central
visual acuity of 20/200 or less.