This is the VHA directive that covers hearing aids, eyeglasses, and contact lenses: VHA DIRECTIVE 1034(1) - PRESCRIBING AND PROVIDING EYEGLASSES, CONTACT LENSES,AND HEARING AIDS
Right off the bat it says:
a. Title 38 United States Code (U.S.C.) 1707(b) provides that VHA may furnish sensorineural aids only in accordance with guidelines that the Department of Veterans Affairs (VA) prescribes. Subsequently, the VA promulgated regulations establishing such guidelines at Title 38 Code of Federal Regulations (CFR) 17.149.
b. All Veterans eligible for care and services under 38 CFR 17.38 are eligible for diagnostic and preventive audiology care, and diagnostic and preventive eye care services. These diagnostic and preventive services are separate from VA’s provision of eyeglasses, contact lenses, and hearing aids. Veterans shall not be denied access to audiology and eye care services covered under 38 CFR 17.38 because they do not meet the eligibility criteria for eyeglasses, contact lenses, and hearing aids.
c. Veterans in all enrollment Priority Groups may be eligible to receive sensorineural aids (eyeglasses, contact lenses and hearing aids) as authorized under 38 CFR 17.149 provided they are otherwise receiving VA care or services.