Tennessee Code Title 71. Welfare § 71-4-2101

(A)(i) Who has a central visual acuity of 20/200 or less in the better eye with corrective lenses, or a field defect such that the peripheral diameter of visual field subtends an angular distance no greater than twenty degrees (20°), or a progressive visual loss having a prognosis leading to one (1) or both these conditions;

(ii) Who has chronic hearing loss so severe that most speech cannot be understood with optimum amplification, or a progressive hearing loss having a prognosis leading to this condition; and

(iii) For whom the combination of vision and hearing loss described in subdivisions (1)(A)(i) and (ii) cause extreme difficulty in attaining independence in daily life activities, achieving psychosocial adjustment, or obtaining a vocation;