_______________ glaucoma happens when the eye makes extra blood vessels that cover the part of your eye where fluid would normally drain.
a. Neovascular
b. Pigmentary
c. Exfoliation
d. Uveitic
_______________ glaucoma happens when the eye makes extra blood vessels that cover the part of your eye where fluid would normally drain.
a. Neovascular
b. Pigmentary
c. Exfoliation
d. Uveitic
Answer: (a). Glaucoma is a group of eye diseases that are usually characterized by damage to the optic nerve and gradual vision loss that starts with losing peripheral (side) vision. People who have high eye pressure are at higher risk for glaucoma.
Primary glaucomas:
When experts don’t know what causes a type of glaucoma, that type is called a primary glaucoma.
Secondary glaucomas:
Sometimes glaucoma is caused by another medical condition — this is called secondary glaucoma.
1. Neovascular glaucoma
Treatments: Medicines, laser treatment, surgery
Neovascular glaucoma happens when the eye makes extra blood vessels that cover the part of your eye where fluid would normally drain. It’s usually caused by another medical condition, like diabetes or high blood pressure.
If you have neovascular glaucoma, you may notice:
- Pain or redness in your eye
- Vision loss
This type of glaucoma can be hard to treat. Doctors need to treat the underlying cause (like diabetes or high blood pressure) and use glaucoma treatments to lower the eye pressure that results from it.
2. Pigmentary glaucoma
Treatments: Medicines, laser treatment, surgery
Pigment dispersion syndrome happens when the pigment (color) from your iris (the colored part of your eye) flakes off. The loose pigment may block fluid from draining out of your eye, which can increase your eye pressure and cause pigmentary glaucoma.
Young, white men who are near-sighted are more likely to have pigment dispersion syndrome than others. If you have this condition, you may have blurry vision or see rainbow-colored rings around lights, especially when you exercise.
Doctors can treat pigmentary glaucoma by lowering eye pressure, but there currently isn’t a way to prevent pigment from detaching from the iris.
3. Exfoliation glaucoma
Treatments: Medicines, laser treatment, surgery
Exfoliation glaucoma (sometimes called pseudoexfoliation) is a type of open-angle glaucoma that happens in some people with exfoliation syndrome, a condition that causes extra material to detach from parts of the eye and block fluid from draining.
Recent research shows that genetics may play a role in exfoliation glaucoma. You are at higher risk if someone else in your family has exfoliation glaucoma.
This type of glaucoma can progress faster than primary open-angle glaucoma, and often causes higher eye pressure. This means that it’s especially important for people who are at risk to get eye exams regularly.
4. Uveitic glaucoma
Treatments: Medicines, surgery
Uveitic glaucoma can happen in people who have uveitis, a condition that causes inflammation (irritation and swelling) in the eye. About 2 in 10 people with uveitis will develop uveitic glaucoma.
Experts aren’t sure how uveitis causes uveitic glaucoma, but they think that it may happen because uveitis can cause inflammation and scar tissue in the middle of the eye. This may damage or block the part of the eye where fluid drains out, causing high eye pressure and leading to uveitic glaucoma.
In some cases, the medicines that treat uveitis may also cause uveitic glaucoma or make it worse. This is because corticosteroid medicines may cause increased eye pressure as a side effect.
Source: www.pharmacyexam.com
Citation: https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/glaucoma/types-glaucoma
