It is incorrect to say that some people are not nearsighted in any way. Some people watch both TV and computer and use their eyes for a long time without myopia is just a phase of performance. There are several trends in the development of myopia, as follows: first, through the curvature of the cornea; second, through changes in the lens; and third, through changes in the eye axis to change the refractive state of the human eye. Some people may already be growing and changing the axis of the eye, but because the change in curvature of the cornea and the change in curvature of the lens compensate for the change in the length of the eye axis, so looking at how this part of the population plays and uses their eyes is not myopic, but in fact the change in myopia, the growth of the axis of the eye has already been produced.