07TBSS

Hello guys, new member here.  Never was interested in window tint until my doctor 4 years ago mentioned it to help with my migraines I get when driving. Happy to say I haven't had any in 4 years at all.  He wrote me a prescription for severe photo-phobia and stated I needed "full front window tint".  Fast forward now and I now have two vehicles that are fully tinted, my impala has 20% all around excluding the windshield and my other has 5% all around, again excluding the windshield.  I now have two separate prescriptions from two different doctors for the tint, and was looking to get the windshield done in 50 or 35%, really thinking 50%.  Wondering for those with windshield tint, hows the visibility at night?  I don't drive much at night and when I do, my quad retrofit will light the way.  Lastly does anyone know if a medical exemption will cover windshield tint in Michigan?  Talked to a state cop last week and he said I won't have any issues at all with it.  Also stated there is nothing in the law saying I couldn't have the full windshield while having an exemption.