What is Nearsightedness or myopia?

Nearsightedness or myopia, caused by oblique muscle spasm
(Interior oblique and superior oblique).
With myopia eyes is slightly compressed and extended forward,
which makes it difficult to properly focus on the retina.
The main task with myopia is to relax the eyes and eye muscles and do not overstress the eyes. To do this, as often as possible, look at a long distance objects, close your eyes for 10 seconds to rest as soon as you feel the symptoms of eye fatigue. Always remember relaxed eyes can see better and more clear.