Ah, I can't tell you whether your father was right. Because if you want to make his words right, I think it should be get old instead of grow up. Maybe you are a teenager now, so if you don't protect your eyes, the prescription will worsen dramatically. But why I said myopia will be better when you are old? Let me figure out it. Myopia means eyeballs get to protrude, so the images presented are in front of the retina and presbyopia is this kind of vision problem that the images will be presented in back of the retina. So, if you suffered from myopia, your prescription will be cancel out a part by the presbyobia when you are old. But if you don't protect when you re young, this is not going to happen. So, you should love your eyes and protect them in the daily life.
