Recent studies surrounding glaucoma and its causes have continued to shed light on the disease’s behavior. The primary determining factors for glaucoma rest within the optic nerve at the back of the eye, which can be at risk for damage when the intraocular pressure (IOP) of the eye becomes too high. When the optic nerve receives too much pressure for long periods of time — such as in the case of glaucoma — it can no longer send the “full picture” of your eyesight to the brain, leaving blind spots around the perimeter of your vision.