Glaucoma is a group of eye diseases that damage the optic nerve, which is responsible for sending visual information from the eye to the brain. The most common type of glaucoma is called open-angle glaucoma, which occurs when the eyes drainage system becomes blocked or doesnt function properly, leading to a buildup of fluid and increased pressure inside the eye. This pressure damages the optic nerve and can cause gradual vision loss, starting with peripheral vision. Glaucoma can occur at any age but is more common in older adults and is one of the leading causes of blindness for people over the age of 60. Many forms of glaucoma have no warning signs, and the effect is so gradual that you may not notice a change in vision until the condition is in its later stages. Regular comprehensive eye exams can help detect glaucoma in its early stages, before significant damage occurs. Treatment for glaucoma can include prescription eye drops, laser treatments, and surgeries, which can slow down disease progression and vision loss.