Hi. For the past 5 years, I have been seeing numerous spots in my eyes, starting off white, and sometimes the white turns to a darker color, and then disapears. Also I am experiencing a bit of difficulty seeing at night, and everything becomes green in my periphal vision, for a short period of time if I am in darkness for a certain amount of time. I am very concerned, seeing as I am only 21 years old, I am wondering what it could be that has been affecting my eyes for a good amount of time now. I went to my eye doctor two years ago, and he dialated my pupils, did a thorough eye exam, and said everything was fine. What could these problems be?