Conjunctivitis is an infection caused by inflammation of the whites of the eyes. If a patient develops conjunctivitis and there is a delay in treatment, it may spread to the other eye. 1. Symptoms - Feeling irritated - Swollen eyelids - Lots of tears - Convulsions - It can infect the other eye in as little as a week. 2. Reason - Infected through dirty hands containing germs or bacteria through d..