What perceptual symptom may occur around lights in closed-angle glaucoma?

• A. Acute eye pain
• B. Blurred vision
• C. Halos around objects
• D. Hearing loss

Answer: (C)

When intraocular pressure rises rapidly in an acute angle-closure glaucoma attack, the cornea becomes edematous and scatters incoming light. That light diffraction creates halo-shaped rings around bright lights, a perceptual change patients often notice. This halos effect is more specific to the corneal edema from the sudden pressure rise than ordinary blurred vision or eye pain alone, and it helps differentiate this scenario from other visual symptoms. Hearing loss has no relation to glaucoma, so it wouldn’t be expected in this context.