PRINCIPAL'S FOREWORD​ The College of Ophthalmology & Allied Vision Sciences (COAVS), King Edward Medical University / Mayo Hospital, Lahore, Pakistan, one of the most leading institutions imparting ophthalmic education in Pakistan. COAVS making it modest start in a single room in May 1999 was established as Punjab Institute of Preventive Ophthalmology (PIPO) in 2004 and