Effects of Topical Timolol and Latanoprost by Tear Film Evaluation and Impression Cytology

The primary objective of this study is to describe the effects of application of topical timolol or latanoprost on the conjunctiva with the use of tear break-up test, Schirmer test and impression cytology; the secondary objective of this study is to evaluate the impact of dry eye symptoms on the quality of life among glaucoma patients.

All patients were asked to answer the ocular surface disease index (OSDI) questionnaire. Dry eye work-up consisted of tear break-up test, staining tests with fluorescein and Lissamine green, Schirmer test with anesthesia, and conjunctival impression cytology. Conjunctival samples were then examined, evaluated and their changes documented by a single ocular pathologist.