This document discusses allergic conjunctivitis, which is an allergic reaction causing redness, itching, and watery discharge in the eyes. It can be triggered by substances like pollen, dust, animal dander, and perfume. Symptoms include red, itchy, watery eyes and swollen eyelids. There are two types - acute occurs seasonally while symptoms are milder but more chronic in nature. Diagnosis involves examinations and tests to identify allergens while treatment focuses on oral antihistamines, eye drops and avoiding allergens through precautions like keeping indoor spaces dust-free.