Glaucoma is a disease that damages your eye’s optic nerve. It usually happens when fluid builds up in the front part of your eye. That extra fluid increases the pressure in your eye, damaging the optic nerve.

There are many kinds of Glaucoma .Although in most cases the intraocular pressure is high, normal tension glaucoma is an entity.

Most people with open-angle glaucoma do not notice any change in their vision until the damage is quite severe. This is why glaucoma is called the “silent thief of sight”.

Some people have a higher than normal risk of getting glaucoma. This includes people who are over the age of 40 or have a family history of glaucoma

Most treatments are designed to lower and/or control intraocular pressure (IOP), which can damage the optic nerve. That can be drops installation, laser or surgery.