What are the symptoms of glaucoma?

Glaucoma is an eye disease caused by elevated intraocular pressure or impaired fluid circulation within the eye, leading to damage of the optic nerve. The main symptoms include: 1. Vision loss: In the early stages, this may not be obvious, but as the condition progresses, the visual field gradually narrows, potentially leading to severe vision loss or even blindness in advanced stages. 2. Intraocular pressure fluctuations: Pressure inside the eye may suddenly rise, causing an acute attack. Symptoms during such episodes are more severe and may include nausea, vomiting, halos around lights (chromatopsia), and eye pain. 3. Chronic symptoms: In open-angle glaucoma, symptoms are often subtle because the loss of visual field is gradual, and patients may not notice the problem until the later stages. If any of the above symptoms occur, immediate medical attention should be sought.