Mich. Comp. Laws § 400.131
Any agency of the state or county or municipality, or any commission, clinic, or board administering relief, social security, health insurance or health service under the laws of the state of Michigan shall accept the services of optometrists registered in the state in accordance with law for the purposes of rendering services defined under the optometric law to any person under the jurisdiction of said agency, clinic, commission or board administering such relief, social security, health insurance or health service, on the same basis and on a parity with any other person authorized by law to render similar professional service, when such services are needed, and shall pay for such services in the same way as other professions may be paid for similar services.
MCL 400.131