These restrictions mean that if you want darker-than-standard tint on side or rear windows that would normally exceed Oregon’s legal limits, you’ll need valid medical documentation under ORS 815.221. With ForeverTint, we help determine if you qualify by connecting you with a licensed physician or optometrist who understands Oregon’s medical tint requirements. Once approved, your signed documentation allows you to legally operate your vehicle with medically necessary darker window tint in accordance with Oregon law.