Comparable effects on tear film parameters after femtosecond laser-assisted and conventional cataract surgery
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ORIGINAL PAPER
Comparable effects on tear film parameters after femtosecond laser-assisted and conventional cataract surgery Marc Schargus . Svetlana Ivanova . Gesa Stute . H. Burkhard Dick . Stephanie C. Joachim
Received: 4 July 2019 / Accepted: 22 June 2020 Ó The Author(s) 2020
Abstract Purpose Dry eye symptoms after conventional cataract surgery are a very common problem. Until now, only few data are available on objective tear film parameters in regard to femtosecond laser-assisted cataract surgery (LCS). Aim of this study was therefore to analyze and compare tear film parameter changes between LCS and conventional cataract surgery. Methods A consecutive group of 34 patients, scheduled for cataract surgery, were randomly selected for either LCS or conventional cataract surgery (17 patients/group). Tear film assessments including tear film osmolarity, Schirmer test, MMP-9 analysis via quantitative ELISA, corneal sensitivity, corneal fluorescein staining, and conjunctival fluorescein staining
M. Schargus (&) Department of Ophthalmology, Heinrich-HeineUniversity Du¨sseldorf, Moorenstraße 5, 40225 Du¨sseldorf, Germany e-mail: [email protected]
were sequentially evaluated pre- as well as 1 and 3 months postoperatively. Results Both groups showed no significant difference in baseline characteristics. All surgeries were performed without any complications. After 1 and 3 months, there was no statistically significant difference in regard to tear film osmolarity (1 month: p = 0.81, 3 months: p = 1.0), Schirmer test (1 month: p = 0.35, 3 month: p = 0.08), and MMP-9 concentration (1 month: p = 0.36, 3 month: p = 0.28) between the two groups. Conclusions Neither LCS nor conventional cataract surgery affected objective tear film parameters significantly during our 3-month postoperative observation period. Hence, both surgical techniques can be equally used to treat patients without prior dry eye symptoms. Keywords Dry eye MMP-9 Tear film parameters Femtosecond laser-assisted cataract surgery Conventional cataract surgery
M. Schargus Asklepios Nord Eye Hospital, Hamburg, Germany
Introduction
M. Schargus S. Ivanova H. B. Dick Institute for Vision Science, University Eye Clinic, RuhrUniversity Bochum, Bochum, Germany
Cataract surgery has evolved rapidly over the past decades, and new technologies, like femtosecond laser-assisted cataract surgery (LCS), were adopted to enhance optical and anatomical results and safety of this surgical procedure [1]. Dry eye disease (DED) is a common condition in elderly people. Numerous
G. Stute H. B. Dick S. C. Joachim Experimental Eye Research Institute, University Eye Clinic, Ruhr-University Bochum, Bochum, Germany
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Int Ophthalmol
reports were published on tear film alterations after cataract surgery in the past, dealing with subjective symptoms of DED and ocular discomfort within the first 1–3 months after surgery [2–4]. Several evaluation techniques exist to diagnose DED. Common tests include patient symptom q
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