Ayesha Kiran, Shakeela Abbas, Nimra Gul, Maryam Jabbar, Sadaf Qayyum.
Assessment of Tear Film Stability in patients with Pterygium.
Al-Shifa J Ophthalmol Jan ;17(3):123-7.

Objectives: To assess tear film instability in pterygium patients and to compare tear film stability in different grades of pterygium. Methodology: Descriptive cross-sectional study was carried out from October 2017 to May 2018 at Madina Teaching Hospital, Faisalabad Ophthalmology Department. Pterygium patients of all grading with age ranging from 30 to 60 years were included. Total population of 30 subjects of both genders was included. Slit lamp examination was performed to assess ocular surface pathologies and tear breakup time test was measured with fluorescein strips. Data analyzation was done, using SPSS 20 software. To compare tear film stability in different grades of pterygium, the association was determined using chi-square test. Results: Total 30 subjects; there were 20 (66%) males and 10 (33%) females. Tear film instability was noted in majority of pterygium patients with TBUT < 10 seconds. The results were significant with level of significance 0.001. The mean of TBUT test value was 5.567+- 2.956 seconds. In total 20 right eye cases, 7(35%) had Grade-I pterygium, 3 (15%) had GradeII pterygium and 10(50%) patients had Grade III pterygium. In total 10 left eye cases, 2(20%) cases had Grade I pterygium, 7(70%) cases had Grade II and 1(10%) case had present Grade III. Conclusion: The result showed that there was significantly tear film instability present in pterygium patients and mostly patient reported in grade 3 showed that as disease worsens TBUT also decreases.

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