There is a lineage

Myopia is sometimes inherited. If your parents had myopia, you may also have myopia.

Less exposure to outside light

Less exposure to outside light and staying indoors all the time. Living in a dark room can also cause myopia.

This is more important for children. Children use the phone less, Go out and play. This can reduce the risk of myopia.

I’m going to check myself to see which of these points are in line with what I can correct.