You may need to wear a pair of prescription glasses
if you have any kind of vision problems. But now you don't have any vision problems, so you don't need to wear glasses. But you still need to protect your eyes in daily lives. You can provide your eyes with enough nutrients through meals. Some people will decorate themselves with glasses frames. This isn't harmful to their eyes. If people only wear glasses when they need to read, they may have presmyopia which is a kind of vision problem that often happens among senior citizens because they can't see things in a nearby distance clearly. As to those who have myopia, they can't see things in the distance clearly so they need to wear glasses all the day.