Toller, have you had your ears checked by an ear, nose and throat specialist?........vertigo and a number of ear problems can cause strain on your eyes which can give you optical problems. Sounds simplistic? Thought so! I have ototoxic bilateral vestibulopathy and I get HORRENDOUS symptoms......the inner ear is one strange bunny.
Are you female? How old are you? Get your hormones/thyroid checked.......sorry for prying babe.......just trying to get a baseline.
Feel free to pm me if you wish.......
Hope you feel better
Michah