A 6-year-old girl from rural Maharashtra presents with a 6-week history of bilateral conjunctival injection, mild mucoid discharge, and recurrent episodes of lid swelling. Her mother reports that the child has been attending school and playing with other children. On examination, there is follicular reaction on the upper tarsal conjunctiva and mild pannus formation. Giemsa stain of the conjunctival scraping shows intracellular inclusions. What is the most likely diagnosis and the appropriate management?