For the purposes of AB, a blind person is one who has no vision or who, even with
the help of glasses or other device, has not sufficient ocular power for the ordinary
affairs of life. This general definition is stated in the following technical terms:
A blind person shall be one whose vision is 20/200 or less in the better eve with
the Standard Snellen Chart and whose vision cannot be remedied or improved. If the
vision in the better eye is more than 20/200 but is accompanied by a contraction of
the peripheral field to such an extent that the widest diameter of the visual field
subtends an angular distance no greater than 20 degrees it is considered as coming
within the definition. Eligibility also exists for persons with an aphakic eye with a vision of 20/70 in
the better eye.