Window Film Medical Exemptions in Florida

In Florida, a window film medical exemption is an official certificate that allows a person with certain medical conditions to use darker or more extensive window tint on their vehicle than the standard limits set by state law. This exemption exists so that people who need extra protection from sunlight and UV exposure can still drive safely and legally.

How Standard Florida Window Tint Laws Work

Under normal circumstances, Florida limits how dark you can tint your vehicle windows. These limits are based on visible light transmission (VLT) – the percentage of light that must be able to pass through the glass and tint combined.

For most sedans:

  • Windshield: Non-reflective tint only, above the manufacturer’s AS-1 line.
  • Front side windows: Must allow at least 28% of light in.
  • Back side windows: Must allow at least 15% of light in.
  • Rear window: Must allow at least 15% of light in.

For SUVs, vans, and other multi-purpose vehicles:

  • Windshield: Non-reflective tint only, above the AS-1 line.
  • Front side windows: Must allow at least 28% of light in.
  • Back side windows: May be significantly darker, down to about 6% VLT.
  • Rear window: May also be as dark as about 6% VLT.

The medical exemption is what allows an eligible driver or passenger to go darker than these normal limits when there is a documented medical need.

What Is a Window Film Medical Exemption?

A Florida window film medical exemption is a certificate issued by the Florida Department of Highway Safety and Motor Vehicles (FLHSMV). It confirms that the person named on the certificate has a qualifying medical condition that requires reduced exposure to light and UV rays, and therefore is allowed to have window tint darker than standard Florida law normally permits.

The exemption is issued based on section 316.29545, Florida Statutes, which directs FLHSMV to provide this accommodation for people with certain medical conditions.

Who Can Qualify for a Medical Tint Exemption?

Florida law doesn’t limit the exemption only to one single diagnosis. Instead, it focuses on conditions that require limited exposure to light, especially UV and visible light. According to the current state-approved application form, conditions that may qualify include:

  • Lupus (Systemic Lupus Erythematosus)
  • Dermatomyositis
  • Albinism
  • Total or facial vitiligo
  • Xeroderma pigmentosum
  • Other autoimmune diseases or medical conditions that require limited exposure to light, as documented by a licensed medical professional

In practice, this can include a range of light-sensitive or UV-sensitive conditions when a physician determines that additional tint is medically necessary. The key is that a qualified medical professional is willing to certify that darker window tint is needed for your health.

Which Vehicles Can Be Covered?

The exemption is vehicle-specific. On the application, you list the vehicle(s) that will be equipped with the darker tint, including:

  • Title number
  • Vehicle Identification Number (VIN)
  • Year
  • Make

The exemption certificate will reference this information and is tied directly to those vehicles. If you sell or transfer the vehicle, the exemption for that vehicle becomes invalid and does not automatically move to your next vehicle.

How to Apply for a Window Film Medical Exemption in Florida

To obtain a medical exemption certificate, you’ll use the official state form and follow a few key steps.

1. Get the Official Application Form

Download and print Form HSMV 83390 – Application for Sunscreening Medical Exemption directly from the FLHSMV website:

2. Complete the Registrant and Applicant Sections

The form separates the person who owns or registers the vehicle from the person who has the medical condition (they can be the same person or different people).

  • Registrant (Section 1): The person who owns or leases the vehicle and whose name is on the registration.
  • Applicant with Medical Condition (Section 2): The individual whose medical condition requires limited light exposure. This person certifies, under penalty of perjury, that they have one of the qualifying conditions listed on the form or another condition that requires limited light exposure.

3. Have a Qualified Medical Professional Complete the Certification

Next, a licensed medical professional must complete the Physician’s Statement of Certification (Section 4 of the form). According to FLHSMV instructions, this can be:

  • A physician licensed under Chapters 458, 459, or 460, Florida Statutes
  • A dermatologist licensed under Chapter 458, Florida Statutes
  • A physician practicing in a military medical facility, state hospital, or federal prison (with the facility’s name and address)
  • An advanced registered nurse practitioner licensed under Chapter 464, working under the protocol of a licensed physician
  • A physician assistant licensed under Chapter 458 or 459, Florida Statutes

The certifying professional must check the appropriate diagnosis on the form (for example, lupus, albinism, vitiligo, etc.) or specify another medical condition that requires limited exposure to light, and then sign and date the form.

4. Gather Identification

You must include a photocopy of one of the following with your application:

  • A current Florida driver license
  • A current Florida identification card

5. Pay the Required Fee

For each vehicle you want covered by the exemption, Florida currently charges a $6.50 fee for both original and duplicate certificates. There is no fee for a replacement certificate if the original was lost in transit and you submit a completed “lost-in-transit” application within the time frame specified on the form.

6. Mail the Application

Mail the completed Form HSMV 83390, along with the required identification copy and payment, to the address listed on the form. As of the current version, the form directs you to mail it to the Bureau of Motorist Compliance in Tallahassee. Always confirm the address on the latest version of the form before mailing.

After Your Medical Exemption Is Approved

Once the state approves your application, you will receive a medical exemption certificate (and associated decal information) tied to the specific vehicle(s) you listed.

Important points to remember:

  • No expiration date: The certificate does not expire; however, it can be changed or revoked if the law changes or if the vehicle is sold or transferred.
  • Non-transferable: You cannot transfer the exemption to a new owner or to a different vehicle. A new application is required for a different vehicle.
  • Must be kept in the vehicle: The exemption certificate must be kept in the vehicle at all times so you can show it to law enforcement if your tint is questioned during a traffic stop.

How Dark Can Your Tint Be With a Medical Exemption?

The medical exemption allows you to exceed the normal VLT limits for Florida, but it does not give unlimited freedom to do anything you want. The FLHSMV and your medical provider work within the statute to determine what is medically justified while still allowing for safe operation of the vehicle. It’s a good idea to discuss your plans with your tint installer and show them your certificate so they can help you choose an appropriate product.

Other Exemptions Mentioned in Florida Law

Section 316.29545, Florida Statutes, also exempts certain vehicles for non-medical reasons. For example, some undercover or canine law enforcement vehicles, and certain vehicles owned or leased by licensed process servers or private investigators, may also be exempt from normal window sunscreening requirements. These are separate from the medical exemption and follow different criteria.

Key Things to Remember

  • A window film medical exemption in Florida is meant to protect people whose health is affected by sunlight and UV exposure.
  • You must use the official Form HSMV 83390 and have it completed and signed by a qualified medical professional.
  • The exemption is issued by FLHSMV, tied to specific vehicles, and must be kept in the vehicle at all times.
  • The certificate does not expire, but it becomes invalid if the vehicle is sold or transferred.
  • Even with an exemption, it’s smart to work with an experienced window tint installer who understands Florida law and can help you stay compliant.

Note: This information is provided for general informational purposes and should not be taken as legal advice. Always refer to the latest forms and guidance from the Florida Department of Highway Safety and Motor Vehicles and consult a qualified professional if you have specific legal questions.