A Study of Correlation between Tear Film Break - Up Time (TBUT), Pterygium and Pinguicula on Patents Attending a Tertiary Centre, North Bengal Medical College & Hospital, Darjeeling, Sub Himalayan Region, India

Introduction: Degenerative changes in conjunctive are quite common in India, especially after 40 years of age. Degenerative changes like Pterygium and Pinguicula occurs especially due to prolonged exposure to ultra violet rays who lives in dry windy area and having pre-existing dry eye syndrome. Pterygium is a elastotic degeneration of the subconjunctival tissue approaches towards the cornea in a triangular fashion. Pterygium is mostly prevalent on the palpebral aperture mostly in the nasal side. It is thought that the predominantly nasal location is related to reflection of light from the nasal bridge on to the nasal conjunctiva. The ultraviolet light may be mediated by mutation in the P53 gene.