Well, generally speaking, glaucoma actually is related to a group of diseases. And in some degree, it can cause damage to the optic nerve because of increased pressure within the eye. And according to some researches, a severe eye infection, injury, blocked blood vessels or inflammatory conditions of the eye can lead to it. You should remember that it can be hereditary. On the other hand, for myopia, when you get myopia, it will be hard for you to read at a close distance, even if you are very young. And the myopia can develop at 20 years old. And then, what is more, it is a leading cause of blindness. By the way, myopia can be related to glaucoma and cataract, which can affect both vision and ocular health. So in some degree, it can be dangerous.