The Effect of Conventional Hormone Therapy and Tibolone on Tear Composition and Function in Postmenopausal Women.

ABSTRACT

Objective: To compare the effects of conventional hormonal therapy (HT) and tibolone on tear composition and tear function. Material and methods: Prospective randomized study in 60 postmenopausal women who received conventional HT versus tibolone for postmenopausal symptoms. Response assessed on Kupperman index, eye symptoms and qualitative and quantitative tests for tears at six months follow-up. Quantitative data analyzed using Student’s t-test, ANOVA test, Fisher’s exact test and qualitative data by using McNemar-Bowker test with Bonferroni correlation and Kappa test. Results: There was a significant improvement in the mean Kupperman scores with conventional HT and tibolone (p < 0.01). Tibolone effectively reduced foreign body sensation but there was no appreciable change in other eye symptoms with both therapies. P value did not show any significant change in quantitative tests (Schirmer’s I and II) and qualitative tests (break-up time) for tear secretion. Tear immunoglobulin A level was significantly elevated with both therapies. Conclusion: Conventional HT or tibolone did not have any significant beneficial effect on tear composition and tear function. A larger study can be undertaken using systemic or topical estrogen or androgen containing preparation for further evaluation for dry eye symptoms.