Well, generally speaking, not all the glaucoma is hereditary. As we know that glaucoma actually is related to a group of diseases and it can cause damage to the optic nerve as a result of increased pressure within the eye. And for the causes, it can be caused by a severe eye infection, injury, blocked blood vessels or inflammatory conditions of the eye. Also, it can be hereditary. But on the other hand, not all the glaucoma is hereditary. For you, you can try to use some lutein, which can improve visual function in dry eyes sufferers and may slow the progression of the dry eyes. Besides, Lutein is a pigment that you can find in many foods. So you can have a try. By the way, drinking more water and eating fruits are also important.