Glaucoma is an eye disease which is typically characterized by increased pressure of the fluid inside of the eye which causes damage to the Optic Nerve. When the Optic Nerve is damaged, your peripheral or side vision is lost first and it progresses until it steals your central vision as well. There are typically no signs or symptoms of glaucoma until much of your vision is lost. Controlling glaucoma is based on lowering and controlling the pressure inside the eye. This is done by many different eye drops or by surgery. Glaucoma is the second leading cause of blindness in the world. 2.2 million Americans have glaucoma but only 50% know they have it.