Angle-Closure Glaucoma is a type of eye condition that occurs when the drainage angle of the eye becomes blocked. This blockage prevents fluid from leaving the eye, leading to a rapid increase in intraocular pressure. Symptoms may include severe eye pain, headache, nausea, and blurred vision. If left untreated, Angle-Closure Glaucoma can cause permanent vision loss. It is often diagnosed through a comprehensive eye exam, and treatment options may include medications to lower eye pressure or surgical procedures to create a new drainage pathway. Early detection is crucial for preserving vision.