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Study of ocular safety for 222 nm UVC room disinfection lamp

Prospective interventional study of ocular safety for 222 nm UVC room disinfection lamp - Study of ocular safety for 222 nm UVC room disinfection lamp

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000042867
Enrollment
5
Registered
2020-12-28
Start date
2021-01-14
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy adults

Interventions

Ultraviolet of 222 nm at 22 mJ / cm2 are irradiated. Ultraviolet of 222 nm at 50 mJ / cm2 are irradiated. Ultraviolet of 222 nm at 50 mJ / cm2 are irradiated. Ultraviolet of 222 nm at 75 mJ / cm2 are

Sponsors

Shimane University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1)Those who obtained document consent by their own voluntary intention about participation in this trial 2)Avoiding exposure for ultraviolet within 48 hours. 3)Corrected visual acuity 0.04 4)Not being treated for eye diseases that affect eyesight. .5)Do not use eye drops or topical medication for facial skin

Exclusion criteria

Exclusion criteria: 1)People wearing contact lens. 2)Engaged in out door work that are exposed UV(field work, welding, etc.). 3)Anyone with abnormalities in the cornea.(corneal eroion D score > 2, or congestion score >2.) 4)Patient with dryeye. 5)Patient with atopic dermatitis. 6)Patient with sun sensitivity. 7)Participating in clinical trials involving other interventions or will participate between the enrollment of this study and the end of observation. 8)Others who are judged inappropriate by the doctor in charge of this trial.

Design outcomes

Primary

MeasureTime frame
Grade of Corneal erosion and conjunctival hypermia at 24 hour,1 month, 3 months and 6 months after ultraviolet irradiation

Secondary

MeasureTime frame
Visual acuity, refractive power, corneal cell density, skin erythema, adverse events

Countries

Japan

Contacts

Public ContactKazunobu Sugihara

Shimane University Ophthalmology

ksugi@med.shimane-u.ac.jp0853202284

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026