What exactly is Glaucoma?
Glaucoma is a group of eye diseases that can cause vision loss and blindness by damaging a nerve in the back of your eye called the optic nerve (NIH).
Glaucoma is classified into two types.
Open-angle glaucoma is the most common type of glaucoma.
This is the most prevalent form of glaucoma. It gradually occurs when the eye does not drain fluid as well as it should. In consequence, eye pressure causing damage to the optic nerve. This kind of glaucoma is painless and initially causes no vision changes.
Angle-closure glaucoma (also called “closed-angle glaucoma)
This type occurs when a person’s iris is very close to the drainage angle in their eye. The iris has the potential to obstruct the drainage angle. Consider it like a piece of paper sliding down a sink drain. When the drainage angle becomes completely blocked, eye pressure rapidly rises. This is referred to as an acute attack. It is a true eye emergency, and you should contact your ophthalmologist as soon as possible.
References and External Links
(1)What Is Glaucoma? – American Academy of Ophthalmology (aao.org) – What Is Glaucoma? – American Academy of Ophthalmology (aao.org)
(2) Development of Glaucoma Animation, Open Angle vs Angle Closure Glaucoma. – Development of Glaucoma Animation, Open Angle vs Angle Closure Glaucoma. – YouTube
(3) Open-Angle Glaucoma – (1586) Open-Angle Glaucoma – YouTube
(4) What is angle-closure glaucoma?- What is angle-closure glaucoma? – YouTube