Ace the ABO Ophthalmology Challenge 2025 – See Your Future Shine!

The primary symptoms of conjunctivitis include redness, itching, and discharge, which are hallmark signs associated with this inflammation of the conjunctiva.

Redness occurs due to dilation of small blood vessels in the conjunctiva, which is a clear membrane covering the white part of the eye and lining the eyelids. This increased blood flow leads to the characteristic pink or red eye often seen in conjunctivitis.

Itching is also a common symptom, as the inflammatory response triggers the release of histamines and other mediators that irritate the sensitive tissues of the eye. This can lead to a persistent urge to rub the eyes, further exacerbating the discomfort.

Discharge is another key symptom, varying in appearance depending on the underlying cause of the conjunctivitis. For example, bacterial conjunctivitis may produce a thick, yellow-green discharge, while viral conjunctivitis typically results in a more watery discharge. Allergic conjunctivitis may also produce watery discharge accompanied by itching.

The other options reflect symptoms not typically associated with conjunctivitis. Blurred vision and halos are more indicative of conditions affecting the cornea or lens, pain and sensitivity to light often suggest more severe ocular conditions, and swelling around the eyes can occur in various contexts but is not a primary symptom of conjunctivitis itself