Glaucoma is a condition of increased pressure within the eyeball, causing damage to optic nerve and leading to gradual loss of sight. It is second largest cause for blindness after cataract. In general, glaucoma cannot be cured, but it can be controlled. Eye drops, pills, laser procedures, and surgical operations are used to prevent or slow further damage from occurring. With any type of glaucoma, regular eye examinations after age 40 are very important to detect progression and to prevent vision loss.