Evidence map›Paper›PMID 42364370›Full record

ArticleJournal of optometry2026

Risk behaviors for infectious Keratitis among contact lens wearers in Switzerland: an analysis by contact lens type.

Philipp Perschak, Sadiq Said, Simone Metzler, Sandrine Anne Zweifel, Daniel Barthelmes, Dominique Hermann, Didier Herrmann, Farhad Hafezi, Léonard Kollros, Martina M Bosch and 1 more

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Article in Journal of optometry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

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No citing paper in PubMed yet.

4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Philipp PerschakDepartment of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Sadiq SaidDepartment of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland; Eye Clinic Wettingen, Wettingen, Switzerland.
Simone MetzlerDepartment of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Sandrine Anne ZweifelDepartment of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Daniel BarthelmesDepartment of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Dominique HermannDepartment of Ophthalmology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.
Didier HerrmannInstitute of Optometry, FHNW University of Applied Sciences and Arts Northwestern Switzerland, Olten, Switzerland.
Farhad HafeziELZA Institute, Zurich, Switzerland.
Léonard KollrosELZA Institute, Zurich, Switzerland.
Martina M BoschEye Clinic Wettingen, Wettingen, Switzerland.
Frank BlaserDepartment of Ophthalmology, University Hospital Zurich, University of Zurich, Zurich, Switzerland. Electronic address: frank.blaser@usz.ch.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate risk behaviors for infectious keratitis among contact lens (CL) wearers in Switzerland, focusing on survey-based, observational subgroup analyses by contact lens type.

methodsThis investigator-initiated, cross-sectional, survey-based, observational, multi-center study was conducted across five eye care institutions in Switzerland. Between August 2023 and August 2024, we interviewed participants wearing CLs using a structured questionnaire. We assigned four subgroups, which included daily disposable soft contact lenses (SCL), reusable SCL, rigid corneal contact lenses (RCL), and rigid scleral contact lenses (ScCL). The survey collected data on demographics, CL type and indication, self-assessed CL knowledge, and risk behaviors related to infectious keratitis. We classified risk behaviors into three main categories, including hand hygiene, wearing behavior, and exposure to water or saliva.

results156 participants were included in the final analysis. Regarding the subgroup allocation, 38 of 156 (24.4%) wore daily disposable SCLs, 48 (30.8%) reusable SCLs, 40 (25.6%) RCLs, and 30 (19.2%) ScCLs. Overall, participants wearing rigid CLs felt better informed about CL care and demonstrated fewer risk behaviors than SCL users. However, risk behaviors were observed across all subgroups, including applying or removing lenses with potentially contaminated hands, extended CL wear, sleeping with CLs, and exposure to water or saliva.

conclusionThis study revealed variations in hygiene practices, wearing behavior, exposure to water or saliva, and risk perception across different CL types. Nevertheless, risk factors for infectious keratitis were present among all subgroups, underscoring the need for lens-specific patient education under professional supervision to improve compliance and mitigate complications.

Indexed as

Contact lensInfectious keratitisRisk behaviorRisk factorsSurvey

Identifiers

PMID42364370
PMCPMC13321030

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.