I am 14 right now and just about 3 months ago I started having eye strain or at least that's what the doctor told me. Then now I see flash of darkness it's like a blackout but it happen only for a while then everything becomes normal agian. Also recently I can see spots in my field of vision like very small spot and I only see them from time to Time. This might be because I pay more attention to my eyes . Im Very concern . Please help explain if it is serious I don't wanna be blind and be a burden:(