Correlation of the Different Grades of Pterygium with Severity of Dry Eye Disease

Abstract

Introduction: Pterygium is an ocular surface disease which causes tear film instablility leading to dry eye symptoms and irritation. Material Method: Patients with primary pterygium having symptoms with grade 2, 3, 4 pterygia were selected. Parameters for dry eye disease like Tear film break up time, schirmer’s test, tear meniscus height were evaluated and OSDI questionnaires was asked and scores were calculated in patients with different grades of pterygium. The data collected was qualitative in nature and Chi square test was used to calculate the association between these variables. Results: In selected 75 patients with various grades of primary pterygium with high percentage of grade 2 pterygium (66.6%). There was definite association with grades of pterygium and OSDI (P<0.05). Similarly, tear film breaks up time (TBUT), tear meniscus height (TMH), schirmer’s 1 and 2 were significantly associated with various grades of pterygium (P<0.05).