§ 233.70 Blindness.

(a) State plan requirements. A State plan under title X or XVI of the Social Security Act must:

(1) Contain a definition of blindness in terms of ophthalmic measurement. The following definition is recommended: An individual is considered blind if he has central visual acuity of 20/200 or less in the better eye with correcting glasses or a field defect in which the peripheral field has contracted to such an extent that the widest diameter of visual field subtends an angular distance of no greater than 20°.

(2) Provide, in any instance in which a determination is to be made whether an individual is blind or continues to be blind as defined under the State plan, that there will be an initial examination or re-examination performed by either a physician skilled in the diseases of the eye or by an optometrist, whichever the individual so selects.