what is glaucoma in the eye

Glaucoma is a group of eye conditions that damage the optic nerve, which is vital for good vision. It usually occurs when fluid builds up in the front part of the eye, increasing the pressure inside the eye and damaging the optic nerve. This damage is often related to high pressure in the eye, but glaucoma can also occur with normal eye pressure. Glaucoma can cause gradual vision loss and is one of the leading causes of blindness, particularly in older adults. There are different types of glaucoma, with open-angle glaucoma being the most common. This type often has no early symptoms and is sometimes referred to as the "silent thief of sight" because vision loss can occur without the individual noticing it. Regular comprehensive eye exams are important for early detection and management of glaucoma to prevent vision loss or slow its progress