Symptoms of glaucoma depend on the type and the stage of disease.

Open-angle glaucoma

• Usually has no symptoms in the early stages of the disease.
• Can cause patchy blind spots, usually on the sides (periphery), but sometimes in the center.
• May cause “tunnel vision” at later stages of the disease.

Angle-closure glaucoma 

• Severe eye pain
• Eye redness
• Severe headache
• Nausea and vomiting
• Blurred vision
• Halos or rings around lights
• Loss of vision