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Several provisions in the social security law are special in that they apply only to people disabled by blindness, Bruce A. Hundley, social security manager in Culpeper, said recently.
A person is considered blind under social security if his or her central visual acuity is 20-200 or less in the better eye with the use of corrective lenses, or there is a reduction in the visual field to 20 degrees or less.
A person who meets this definition of blindness does not have to meet the test of recent covered work to be eligible for social security disability benefits. A blind person is eligible if he or she is fully insured. The amount of work credit needed to be fully insurred ranges from IVi to 6V* years of work, depending on the person’s age and when blindness began.
A person under 55 can receive disability benefits only if he or she is unable to perform substantial gainful activity. The measure of substantial gainful activity is different for people who meet the definition of blindness than for people disabled by some other impairment. Generally, a blind person is not considered able to perform substantial gainful activity if his or her monthly earnings do not exceed $375 in 1979. Additional increases
95.4%