Children with conjunctivitis may experience these symptoms: • a red or pink eye (or eyes) • redness behind the eyelid • swelling of the eyelids, appearing puffy • excessive tears • a yellow-green discharge from the eye • crusting around the eyelids • a dislike of bright lights (photophobia) • a gritty feeling in the eye • itchiness of the eyes and eye rubbing Symptoms usually develop within one to three days (24 to 72 hours) of becoming infected, and can last as short as two days, or as long as three weeks.