Open Access
Photochemistry and Photobiology
RESEARCH ARTICLE
- Published: May 3, 2022
One-year Ocular Safety Observation of Workers and Estimations of Microorganism Inactivation Efficacy in the Room Irradiated with 222-nm Far Ultraviolet-C Lamps
Kazunobu Sugihara 1, Sachiko Kaidzu 1, Masahiro Sasaki 2, Sho Ichioka 1, Yuji Takayanagi 1, Hiroshi Shimizu 1,
Ichiya Sano 1, Katsunori Hara 1, Masaki Tanito 1
1 Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan.
2 Ushio Inc., Tokyo, Japan.
222nmの遠紫外線の眼に対する安全性の観察と研究。Care222®フィルターを使用した遠紫外線（Far UV-C）消毒技術を搭載した装置（ウシオ電機）の設置前後1年間、クリニックで定期的に働く医療従事者の眼を観察した。その結果、急性および慢性的な悪影響は認められなかった。
観察・研究が行われたクリニックにて、微生物の不活化試験が行われた。その結果、黄色ブドウ球菌は90％、φX174ファージは99％の不活化が確認された。
Observations and research on the safety of 222 nm Far UV-C on the eye. The eyes of health care workers regularly working in a clinic were observed for one year before and after the installation of a unit (Ushio) equipped with Far UV-C disinfection technology with Care222® filters. Results showed no acute or chronic adverse effects.
Microbial inactivation studies were conducted in the clinics where the observations and studies were conducted. Results showed 90% inactivation of Staphylococcus aureus and 99% inactivation of φX174 phage.
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