Glaucoma is a common eye disorder that is, in fact, not one but an entire group of disorders with a common label. It is a disorder that damages the optic nerve, which serves to send the images from the eye to the brain.

It was once believed that glaucoma was caused by high fluid pressure inside the eye (called intraocular pressure). Experts now know that, while high intraocular pressure is a risk factor for glaucoma, it is not the only cause.

The early stages of glaucoma are undetectable, and experts estimate that only half of the people who currently have glaucoma even realize that they are affected. While there is no cure for glaucoma, many medications and procedures exist that can help to slow the disease or stop it altogether. However, like so many eye-related disorders, early diagnosis is essential. Because the early stages of glaucoma have no noticeable symptoms, regular eye exams are recommended for everyone, even those who have no eye-related symptoms or problems.