What are the Different Types of Glaucoma?
There are many types of glaucoma. The most common types include :
1. Chronic (Open Angle) Glaucoma :
This is the most common type. In open angle glaucoma, aqueous fluid drains too slowly and pressure inside the eye builds up. It usually results from aging of the drainage channel, which doesn't work as well over time. However, younger people can also get this type of glaucoma.
2. Normal Tension Glaucoma:
This is a form of open angle glaucoma not related to high pressure. People with normal tension glaucoma may be unusually sensitive to normal levels of pressure. Reduced blood supply to the optic nerve may also play a role in normal tension glaucoma.
3. Acute (Angle Closure) Glaucoma:
Less than 10 percent of have this form, but It causes a sudden rise in pressure, requiring immediate, emergency medical care. The signs are usually serious and may include blurred vision, severe headaches, eye pain, nausea, vomiting or seeing rainbow-like halos around lights. Occasionally, the condition may be without symptoms; similar to open angle.
4. Secondary Glaucoma:
Another 10 percent of glaucoma cases come from certain diseases and conditions that damage the eye's drainage system. These include diabetes, leukemia, and sickle-cell anemia also some forms of arthritis, cataracts, eye injuries or inflammation of the eye plus steroid drug use and growth of unhealthy blood vessels.
5. Post-Surgical Glaucoma:
which happen due to some surgeries, such as retinal reattachments increase the chance of getting glaucoma.