A medical exemption for tinted windows and windshields shall apply only to a person who has a diagnosed and documented medical reason to be shielded from the direct rays of the sun, supported by written attestation from the person's physician who is licensed pursuant to 59 O.S. § 495 and who has diagnosed or is treating the applicant for a condition which necessitates a medical exemption from window and windshield tinting laws prescribed in 47 O.S. § 12-422.
Okla. Admin. Code § 260:135-5-69