can you go blind with drifting eyes please read?!

hi i have had drifting eyes since 1999 (11 yrs) i am now 20. and over the period of time things seem to have got worse. i have recently became light sensitive but not in the usual way.. the usual way is hurting of eyes against bright lights. heavy eyes needing to wear sunglasses etc. but i get different symptoms. i actually get eye floaters met up of a light. some idk if cud be classified as floaters. for example there is this speckle and everytime it's really bright (if my eyes are strained for example) sometimes even when i wake up (pressure of eyes shut sleeping) i see it. it doesn't move but it's not a scarring on my sight. it has sometimes been crystal clear and sometimes not depending on what saturation of a room i am in it goes black white clear but never goes bigger or smaller. it seems through to effect a an area of mass on my sight where the lighting around me gets brighter and brighter until i cannot see (like i am impaired for a few mins) then it settles down and things are normal again...