H40.2

Clinical Causes: Anatomical differences such as a shallow anterior chamber of the eye Age-related changes in the eye's structures Family history of glaucoma or eye diseases Cataract development increasing lens size and pushing the iris forward Pupil dilation during stress or low light conditions potentially triggering attacks

Key Symptoms: Sudden onset of eye pain or discomfort Seeing halos or rainbow-colored rings around lights Redness of the affected eye Headache and nausea accompanying eye symptoms Reduced or blurred vision, especially during an attack Increased intraocular pressure detected during eye exams

Diagnosis Path: Diagnosing primary angle-closure glaucoma involves a comprehensive eye examination that includes measuring intraocular pressure, inspecting the drainage angle through gonioscopy, and assessing the optic nerve condition using imaging techniques. These assessments help determine if the angle is closed or narrow and whether there has been optic nerve damage. Regular eye exams are crucial for individuals at risk, especially those with family history or anatomical predispositions.

Treatment Protocols: Management of primary angle-closure glaucoma aims to lower intraocular pressure and prevent optic nerve damage. Treatment options include: - **Medications**: Eye drops or oral medications to reduce intraocular pressure. - **Laser procedures**: Procedures like laser iridotomy, where a small hole is created in the iris to improve fluid flow and prevent angle closure. - **Surgical options**: In cases where medications and laser treatments are insufficient, surgery such as trabeculectomy may be performed. Early diagnosis and appropriate treatment are vital to controlling the condition and preserving vision. Regular follow-up appointments are necessary to monitor the eye pressure and optic nerve health.