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dc.contributor.authorKousha, Obaid
dc.contributor.authorO’Mahoney, Paul
dc.contributor.authorHammond, Robert
dc.contributor.authorWood, Kenneth
dc.contributor.authorEadie, Ewan
dc.identifier.citationKousha , O , O’Mahoney , P , Hammond , R , Wood , K & Eadie , E 2024 , ' 222 nm Far-UVC from filtered Krypton-Chloride excimer lamps does not cause eye irritation when deployed in a simulated office environment ' , Photochemistry and Photobiology , vol. 100 , no. 1 , pp. 137-145 .
dc.identifier.otherRIS: urn:79831378DD375EBB9E9B5B0D51EB893D
dc.descriptionFunding: This work was funded by the Science and Technology Facilities Council (STFC) Impact Accelerator Account (IAA) at the University of St Andrews.en
dc.description.abstractFar-UVC, from filtered Krypton-Chloride lamps, is promising for reducing airborne transmission of disease. Whilst significant research has been undertaken to investigate skin safety of these lamps, less work has been undertaken on eye safety. There is limited data on human eye safety or discomfort from the deployment of this germicidal technology. In this pilot study, immediate and delayed eye discomfort were assessed in a simulated office environment with deployment of Krypton-Chloride lamps, located on the ceiling and directed downwards into the occupied room. Discomfort was assessed immediately post-exposure and several days after exposure using validated, Standard Patient Evaluation Eye Dryness (SPEED) and Ocular Surface Disease Index (OSDI) questionnaires. Our results show no significant eye discomfort or adverse effects from the deployment of Far-UVC in this simulated office environment, even when lamps were operated continuously with participants receiving head exposures of up to 50 mJ cm-2 . In addition, a statistically significant reduction in bacteria and fungi of 52% was observed. Far-UVC in this simulated office environment did not cause any clinically significant eye discomfort and was effective at reducing pathogens in the room. These results contribute an important step to further investigation of the interaction of Far-UVC with the human eye.
dc.relation.ispartofPhotochemistry and Photobiologyen
dc.subject222 nmen
dc.subjectQC Physicsen
dc.subjectSDG 3 - Good Health and Well-beingen
dc.title222 nm Far-UVC from filtered Krypton-Chloride excimer lamps does not cause eye irritation when deployed in a simulated office environmenten
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.institutionUniversity of St Andrews. School of Medicineen
dc.contributor.institutionUniversity of St Andrews. Infection and Global Health Divisionen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.description.statusPeer revieweden

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