What are the symptoms of open angle glaucoma?

• A. Painless, slow loss of peripheral vision.
• B. Sudden severe eye pain with red eye.
• C. Central vision loss early.
• D. Intermittent double vision.

Answer: (A)

Open-angle glaucoma shows a painless, gradual loss of peripheral vision as the optic nerve is damaged over time. Because there isn’t an acute red eye or sharp pressure spike, there’s no sudden pain, making this a slowly evolving field loss rather than an immediate, noticeable symptom. Central vision stays good until late, so early central vision loss isn’t expected. The scenario describing sudden severe eye pain with a red eye fits acute angle-closure glaucoma, not open-angle. Intermittent double vision isn’t typical of glaucoma and points more toward nerve or muscle issues. So the characteristic pattern is a painless, slow narrowing of the outer visual field.