Hi, I have sight problem..-4 on ma right eye, left eye is just -0.5, I keep checking them almost in 6 to 8 months regularly and wear specs all the time, I work as a designer so using laptop almost all day though I wear ma specs all the time, still I feel ma eyes are weak and almost every time of ma eye check up I learn that some power has increased...I don't understand why is it getting so weak, sometimes when I frown I feel I can see better! Any solution??