Closed angle glaucomas, also known as angle-closure glaucomas or narrow-angle glaucomas, are a group of eye disorders characterized by an abnormal and sudden increase in intraocular pressure (IOP) due to the obstruction of the trabecular meshwork, the drainage system of the eye. This obstruction occurs when the angle between the cornea and the iris narrows, preventing fluid from draining properly from the eye, leading to a dangerous buildup of aqueous humor.
This type of glaucoma often presents with acute symptoms such as severe eye pain, blurred vision, halos around lights, headache, and even nausea and vomiting. These symptoms typically occur suddenly and require immediate medical attention to prevent permanent vision loss. Closed angle glaucomas can be categorized into two main subtypes: primary closed angle glaucoma and secondary closed angle glaucoma.
Primary closed angle glaucoma occurs when the drainage angle becomes narrow due to anatomical predispositions, while secondary closed angle glaucoma is caused by other factors, such as trauma, eye inflammation, or certain medications. Risk factors for closed angle glaucomas include age, family history, farsightedness, certain ethnicities, and female gender.
The main goal of treatment for closed angle glaucomas is to lower intraocular pressure by medications, laser treatments, or surgery, depending on the severity of the condition. Prompt diagnosis and intervention can effectively prevent further vision loss and complications associated with closed angle glaucomas. Regular eye examinations are crucial in detecting and managing this eye disorder.
