To apply, submit the Application for Exemption with the physician's letter and payment to the Department of Public Safety (DPS). The DMV gives medical authorizations to individuals seeking protection from the sun, so your local DMV may be a good starting point to obtain a form.Window tint medical exemptions allow you to install darker tint on car windows. See all requirements for medical waivers, certificates and exceptions. Follow the instructions below to complete Application for window tint medical exemption online easily and quickly. How do I fill this out? Fill out the exemption form with all the details mentioned above. Submit this form along with your payment to the Department of Public Safety.