Go to a physician and get them to sign a medical waiver act and bring that to the DMV. The waiver you need to get is tell that doctor your eyes are sensitive to light when you're driving or something along those lines. It will allow your car to go as low as 35% all the way around, including the front windshield but don't do that. It's fairly easy to do if you want to take that step.
2007 E90 335xi - "Sera"
aFe Stage 2 DCI | AE Performance Exhaust | COBB Accessport | HPB Interior LED Kit | M6 Wheels | ER Charge Pipe | MTEC LED Angel Eyes | Helix Intercooler