My daughter is 16 years old and for the last few years she has lost her eye sight in her left eye she has tunnel vision . She has yet to regain vision. With that she sometimes get s lightheaded dizzy spells with flashing lights in her bad eye. A couple times she has fainted. Sometimes she has bad headaches. We have been to many doctors/ specialist no one seems to know the answer. Some have said maybe R. P ,but don t know for sure. She has had 2 MRI S, a lower lumbar puncher, many eye test ... still no answer. They say her cones and rods are dying in her left eye ,but don t know why... Please any insight would be greatly appreciated. Thank you.