What Is Glaucoma?
Glaucoma is a condition that causes pressure in the eyes that damage your optic nerve. Glaucoma gets progressively worse over time, and can lead to permanent vision loss. Symptoms may include blurred vision, rainbow auras, severe eye and head pain, nausea, vomiting, or sudden loss of sight. Globally, over 60 million people have glaucoma; most are over the age of 40.