40 Pa. Stat. § 1502
Whenever any insurer, under any contract, policy or plan of insurance, any self-insured sickness, health or welfare plan, shall provide for a service or for the reimbursement of a service to or on behalf of any of its policyholders, group policyholders, subscribers or group subscribers or any other person or groups of persons, which service is within the lawful scope of practice of a duly licensed optometrist, the person rendering such service or such policyholder, subscriber or other person shall be entitled to the same reimbursement for such service whether the service is performed by a duly licensed physician or by a duly licensed optometrist: Provided, however, That under any such contract, policy or plan which pays on the basis of usual, customary and reasonable charges or on some similar basis, only the method of determining the amount of reimbursement shall be the same. Unless such policy employed shall otherwise provide, there shall be no reimbursement for ophthalmic materials, lenses, spectacles, eyeglasses and/or appurtenances thereto.
40 P.S. § 1502