Glaucoma is a group of eye conditions that damage the optic nerve, which is essential for vision. This damage is often caused by an abnormally high pressure in the eye (intraocular pressure, or IOP). If left untreated, glaucoma can lead to permanent vision loss or blindness. --- 🔍 Types of Glaucoma: 1. Primary Open-Angle Glaucoma Most common type. Develops slowly and painlessly. Often no symptoms until vision loss occurs. 2. Angle-Closure Glaucoma (Acute) Rapid increase in eye pressure. Sudden