Research and Publications

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Evaluation of acute corneal damage induced by 222-nm and 254-nm ultraviolet light in Sprague–Dawley rats

Two hundred twenty-two nanometres ultraviolet (UV) light produced by a krypton–chlorine excimer lamp is harmful to bacterial cells but not skin....

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Computer Modeling Indicates Dramatically Less DNA Damage from Far-UVC Krypton Chloride Lamps (222 nm) than from Sunlight Exposure

This study aims to investigate, with computer modeling, the DNA damage (assessed by cyclobutane pyrimidine dimer (CPD) formation) from...

Need to Revise Human Exposure Limits for Ultraviolet UVC Radiation

The COVID‐19 pandemic has greatly heightened interest in ultraviolet germicidal irradiation (UVGI) as an important intervention strategy to disinfect...

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Chronic irradiation with 222-nm UVC light induces neither DNA damage nor epidermal lesions in mouse skin, even at high doses

Surgical site infections (SSIs) represent an important clinical problem associated with increased levels of surgical morbidity and mortality. UVC...

Minimal, superficial DNA damage in human skin from filtered far-ultraviolet-C (UV-C)

We performed human skin irradiation in two settings using a filtered KrCl far‐UVC source (SafeZoneUVC, Ushio Inc., Tokyo, Japan): firstly, in a novel...

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The impact of far-UVC radiation (200–230 nm) on pathogens, cells, skin, and eyes – a collection and analysis of a hundred years of data

The ongoing coronavirus pandemic requires new disinfection approaches, especially for airborne viruses. The 254 nm emission of low-pressure vacuum...

Harmless Effects of Sterilizing 222-nm far-UV Radiation on Mouse Skin and Eye Tissues

In this issue, Yamano et al. provide further evidence that germicidal 222‐nm far UV light has no immediate and delayed harmful effects on the skin...

Further evidence that far-UVC for disinfection is unlikely to cause erythema or pre-mutagenic DNA lesions in skin

It is well understood that ultraviolet‐C (UVC) radiation is effective for the destruction of micro‐organisms and drug‐resistant bacteria and is being...

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Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light

We have previously shown that 207-nm ultraviolet (UV) light has similar antimicrobial properties as typical germicidal UV light (254 nm), but without...

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Long-term effects of 222 nm ultraviolet radiation C sterilizing lamps on mice susceptible to ultraviolet radiation

Germicidal lamps that emit primarily 254 nm ultraviolet radiation (UV) are routinely utilized for surface sterilization but cannot be used for human...