The most serious type of glaucoma is closed-angle glaucoma, also known as acute angle-closure glaucoma. This is the most serious type because it is considered to be a medical emergency. If you experience severe eye pain, headache, blurred vision, red eyes, halos around lights, or feelings of nausea and vomiting, then you should seek medical attention immediately. Closed-angle glaucoma can cause permanent damage within hours after the symptoms occur and loss of eyesight within days. Immediate medication is given and emergency surgery may be performed if necessary.
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