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The irradiation dose was set not to exceed the former (<jats:italic>i.e.<\/jats:italic>, before 2022) threshold limit value (TLV) (22\u2009mJ\u2009cm<jats:sup>\u22122<\/jats:sup>\/8\u2009h) recommended by the ACGIH. Section\u20091: The eyes and lids of the six ophthalmologists (5 wore glasses for myopic correction) who worked in the room for a mean stay of 6.7\u2009h\u2009week<jats:sup>\u22121<\/jats:sup> were prospectively observed for 12\u2009months. Slitlamp examinations revealed neither acute adverse events such as corneal erosion, conjunctival hyperemia, and lid skin erythema nor chronic adverse events such as pterygium, cataract, or lid tumor. The visual acuity, refractive error, and corneal endothelial cell density remained unchanged during the study. Section\u20092: The irradiation of samples placed on the table or floor using the same fixtures in the room (5\u20137.5\u2009mJ\u2009cm<jats:sup>\u22122<\/jats:sup>) was associated with &gt;99% inhibition of \u03c6X174 phage and &gt;90% inhibition of <jats:italic>Staphylococcus aureus<\/jats:italic>. In conclusion, no acute or chronic health effects in human participants was observed in a clinical setting of full\u2010room ultraviolet germicidal irradiation by 222\u2010nm lamp units, and high efficacy in deactivation of microorganisms was determined in the same setting.<\/jats:p>","DOI":"10.1111\/php.13710","type":"journal-article","created":{"date-parts":[[2022,9,9]],"date-time":"2022-09-09T05:43:35Z","timestamp":1662702215000},"page":"967-974","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":48,"title":["<scp>One\u2010year<\/scp> Ocular Safety Observation of Workers and Estimations of Microorganism Inactivation Efficacy in the Room Irradiated with <scp>222\u2010nm<\/scp> Far <scp>Ultraviolet\u2010C<\/scp> Lamps"],"prefix":"10.1111","volume":"99","author":[{"given":"Kazunobu","family":"Sugihara","sequence":"first","affiliation":[{"name":"Department of Ophthalmology Shimane University Faculty of Medicine  Izumo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3324-6678","authenticated-orcid":false,"given":"Sachiko","family":"Kaidzu","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology Shimane University Faculty of Medicine  Izumo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahiro","family":"Sasaki","sequence":"additional","affiliation":[{"name":"Ushio Inc.  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