vision loss in left eye only for seconds at a time
I am a 28 year old woman who has been having vision loss in my left eye for the last 6 months. It happens anywhere from 5-20 or more times a day. The loss of vision is for less than 1o seconds but it is very strange. It usually happens when I stretch or do a sudden balance change. I do not get dizzy or light headed. I just lose the vision in my left eye for a short period. I have never had headaches with them and it only happens when I am doing a change in movement suddenly or stretching. I have had 2 MRIs and nothing has shown up. I have also had a caratid artery test and that came back fine. It is definitely happening more now than when it started back in June of 06. What do you think it is?