Locate a distant object,bring your finger as close as possible to your eyes so that the finger is clearly visible.
Now,focus on the distant object for about 5-10 secs,then focus on the finger,then again focus on the distant object and so on.Do this exercise regularly for few minutes daily.This strengthens the optical muscles.
Now,focus on the distant object for about 5-10 secs,then focus on the finger,then again focus on the distant object and so on.Do this exercise regularly for few minutes daily.This strengthens the optical muscles.