Types of Glaucoma
The most common type of glaucoma is open-angle glaucoma. Typically, this type of glaucoma occurs when fluid in the eye cannot drain fast enough, causing intraocular pressure to rise. The increased internal eye pressure puts stress on the optic nerve and damages it.
Normal-tension glaucoma is a modern mystery in the eye care world. It is a type of open-angle glaucoma that occurs when eye pressure is still in the normal range. You may be at a higher risk of normal-tension glaucoma if you:
- Are of Japanese heritage
- Have a family history of normal-tension glaucoma
- Have heart problems, like an irregular heartbeat
- Have low blood pressure
Angle-closure glaucoma is severe and is considered an eye emergency. If you experience any symptoms of angle-closure glaucoma, go to your nearest emergency room as soon as possible. Symptoms include:
- Intense pain
- Nausea
- Extremely red eyes
- Blurred or distorted vision
- Halos
Angle-closure glaucoma occurs when the iris’s outer edge blocks fluid from draining out of the front of the eye. The fluid builds up rapidly, causing a sudden increase in eye pressure. Without treatment, angle-closure glaucoma can cause blindness.