What is Glaucoma?

Glaucoma is a group of eye conditions that damage the optic nerve, often due to abnormally high intraocular pressure. It is a leading cause of irreversible blindness worldwide, but early detection and treatment can preserve vision. Key facts include that it affects over 70 million people globally, with open-angle glaucoma being the most common form. Symptoms may be subtle initially, making regular eye exams critical.