The Different Types Of Glaucoma
The two most common types of glaucoma are open-angle glaucoma and angle-closure glaucoma. At least 90 percent of all glaucoma cases are open-angle. Rarer types of glaucoma include congenital (from birth) and traumatic (caused by injury), and there are several others.
Open-angle glaucoma develops very gradually, as the drainage canals of the eye become clogged and the fluid isn’t able to drain effectively. What makes open-angle glaucoma so nefarious is that it rarely has noticeable symptoms. The peripheral vision gradually goes dark, but the central vision remains sharp, so it may seem like nothing is wrong until the condition has advanced. This is why regular comprehensive eye exams are essential, particularly after age 60 (or earlier if there is family history of glaucoma).
Angle-closure glaucoma occurs when the iris itself blocks those drainage canals, causing a much more sudden rise in pressure and obvious symptoms, such as headaches, eye pain, nausea, rainbows around lights at night, and very blurred vision. If you experience these symptoms, come see us immediately! We can also check if your angle is wide or narrow to determine whether you’re at risk of developing angle-closure glaucoma.