IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-9-36527 Original Research Paper TO DETERMINE THE PREVALENCE AND OCCURANCE OF VISUAL MORBIDITY IN PATIENTS OF PTERYGIUM ATTENDING EYE OPD IN A TERTIARY CARE CENTRE OF EASTERN INDIA Vandana Parasar Dr. Dr. Ankita Singh Dr. September 2021 10 9 01 02