Narrow angle glaucomas, also known as angle-closure glaucomas, are a group of eye disorders characterized by an abnormal closure or narrowing of the angle formed between the cornea and the iris. This narrowing obstructs the normal flow of aqueous humor, the fluid responsible for maintaining eye pressure, resulting in an increase in intraocular pressure (IOP). If left untreated, this elevated pressure can lead to damage of the optic nerve and eventual vision loss.
There are two main types of narrow angle glaucoma: acute angle-closure glaucoma and chronic angle-closure glaucoma. Acute angle-closure glaucoma is a medical emergency that occurs suddenly when the drainage angle becomes completely blocked, rapidly raising the IOP. Symptoms may include severe eye pain, blurred vision, headaches, halos around lights, nausea, and vomiting. Chronic angle-closure glaucoma, on the other hand, occurs gradually over time as the angle gradually becomes blocked. This type may present with mild or intermittent symptoms, and individuals affected may not even be aware of the condition until it reaches an advanced stage.
Treatment for narrow angle glaucomas typically involves reducing the IOP through medications, laser procedures, or surgery. Medications such as eye drops or oral medications can help to lower the IOP by either reducing the production of aqueous humor or increasing its outflow. Laser procedures, such as laser peripheral iridotomy or laser trabeculoplasty, aim to create an alternate pathway for fluid drainage. In more severe cases or if other treatments fail, surgical intervention may be required to open the blocked angle and restore normal flow of aqueous humor.
Regular eye examinations and early detection are crucial for the management of narrow angle glaucomas, as prompt intervention
