Well, I totally understand how you feel and how urgent you want to get rid of those annoying glassy eyes. So, as a matter of fact, long term use of glasses would give rise to some lasting impacts on our eyes including glassy eyes. So, it would take about several months before you recover, but how could you deal with your myopic afterwards. Just pay more attention to your eyes.
Usually the short sighted people will have the glassy eyes after they take off the eyeglasses because of the not focused light at the visual nerves. If you want to get rid of it, you'd better improve your vision. You could keep the good habit of using eyes and using the eye drops to improve the eye vision. After you get improved at the vision, the clear eyes will be back again. You should at least use half a year to improve your eye vision and see the effect.