Glaucoma is a condition that afflicts the optic nerve. The optic nerve transmits signals from your retina to the brain. Eyes need to maintain a healthy level of internal pressure. For optimal intraocular pressure, eyes produce new fluid and an equal amount of fluid flows out.
Too much fluid in the eyes causes glaucoma, which leads to high intraocular pressure due to which even the optic nerve may get damaged. Optic nerve damage can lead to impaired vision or permanent blindness. There is no cure for glaucoma, but early diagnosis and timely treatment can ease the symptoms and preserve vision.