None listed
Conditions
Brief summary
This study evaluates the potential for a desktop USB-powered humidifier in improving tear film parameters, ocular surface characteristics, and subjective comfort of computer users. Participants are enrolled into a prospective, randomised, double-masked, crossover study. On separate days, they will be randomised to one hour of continuous computer use, with and without exposure to a desktop humidifier (Homi Ltd). Lipid layer grade, non-invasive tear film break-up time and tear meniscus height are measured before and after computer use. Subjective comfort relative to baseline is also assessed following the 1-hour period.
Interventions
The study location is the Ocular Surface Laboratory at the University of Auckland. On 2 separate days, with at least 24 hours washout between visits, participants are randomised to one hour of continuous computer use, with and without exposure to a desktop humidifier, set at a humidifying rate of 30ml/h (Homi Ltd). Environmental conditions are otherwise identical between the two scenarios. The humidifier placement remains identical throughout the experiment, at a distance of 70-75 cm from the
The study location is the Ocular Surface Laboratory at the University of Auckland. On 2 separate days, with at least 24 hours washout between visits, participants are randomised to one hour of continuous computer use, with and without exposure to a desktop humidifier, set at a humidifying rate of 30ml/h (Homi Ltd). Environmental conditions are otherwise identical between the two scenarios. The humidifier placement remains identical throughout the experiment, at a distance of 70-75 cm from the eyes, and with the indicator light obscured. Lipid layer grade, non-invasive tear film break-up time and tear meniscus height are measured by clinical researchers before and after computer use. Subjective comfort relative to baseline is also assessed following the 1-hour period.
Sponsors
The University of Auckland
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
Age of 18 years or older Non-contact lens wearers No history of major systemic or ocular disease, No history of ocular surgery, and No use of topical or systemic medications known to affect the eye. Able to provide written informed consent Able to attend three visits on separate days Presence or absence of dry eye symptoms
Exclusion criteria
Under 18 years of age Contact lens wearers History of major systemic or ocular disease, History of ocular surgery, and Current use of topical or systemic medications known to affect the eye
Outcome results
None listed