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Abstract
Purpose
This study was designed to determine the ability of ultra-high-resolution optical coherence tomography (UHR-OCT) to monitor tear meniscus volume after dry eye treatment with Restasis® (0.05% cyclosporine).
Methods
UHR-OCT was used to image the upper and lower tear menisci (height and volume) in 14 consecutive dry eye patients at baseline. The treatment group was initiated on daily Restasis and measurements were repeated at 1 and 2 months while on treatment. All measurements were performed immediately after a blink.
Results
The baseline tear meniscus volumes were 0.40 ± 0.19 μL (upper) and 0.43 ± 0.18 μL (lower). In the treatment group, tear meniscus heights showed significant increases of both upper (post-hoc test with Bonferroni correction: P = 0.003) and lower (P = 0.0003) tear menisci, after 1 month on Restasis. The tear meniscus volumes in the treatment group after 1 month of Restasis showed significant increases of both upper (P = 0.007) and lower (P = 0.007) tear menisci. At 2 months, the increase of the tear meniscus was still evident in all measured variables compared with baseline (P < 0.05).
Conclusion
UHR-OCT offers a promising tool for monitoring dry eye treatment. With this method, a measurable increase in tear meniscus volume was evident after 1 month of treatment with Restasis in dry eye patients.
Acknowledgments
This study was supported by research grants from Allergan Inc, the National Institutes of Health (NIH grant P30 EY014801), and Research to Prevent Blindness (New York, NY). We wish to thank Dr Britt Bromberg of Xenofile Editing (New Orleans, LA), for providing editing services for this manuscript.
Disclosure
Jianhua Wang is a recipient of the research grant from Allergan Inc. The authors have no proprietary interest in any materials or methods described within this article.