What is the primary symptom of conjunctival infection?

• A. Redness of the cornea
• B. Diplopia
• C. Redness of the conjunctiva
• D. Unequal pupil size

Answer: (C)

The primary symptom of conjunctival infection is indeed the redness of the conjunctiva. This condition, often referred to as conjunctivitis, typically presents with noticeable redness in the white part of the eye (sclera) due to inflammation of the conjunctiva, which is the membrane lining the eyelids and covering the white part of the eyeball. This redness is usually accompanied by other symptoms such as discharge, itching, or discomfort, but the hallmark sign is the visible redness.

The other options are related to different eye conditions; for example, redness of the cornea indicates a corneal issue rather than conjunctivitis, while diplopia (double vision) suggests a problem with the muscles controlling eye movement or with the nerves. Unequal pupil size could indicate neurological issues or other ocular conditions, but does not pertain to conjunctival infection. Understanding these distinctions is key in recognizing and diagnosing eye-related symptoms appropriately.