At exams times I started facing some problems it probably was just an exhaustion ... my mother took me to the doctor just to make sure the doctor said that i have a poor eyesight and that it appears to her on whatever device she uses that I am -3 in each eye ... I made the glasses she required yet I couldn't see anything with them and saw way better without them no matter how far the distance is i could tell what was written on the board ... tried another doctor and there is the same problem ...