Effect of Smart Phone Reflective Light Film on Dry Eyes and Asthenopia (NCT06992635) | Clinical Trial Compass
CompletedNot Applicable
Effect of Smart Phone Reflective Light Film on Dry Eyes and Asthenopia
China120 participantsStarted 2024-06-01
Plain-language summary
This study aimed to evaluate the effect of anti-reflection (AR) and circularly polarized (CP) film on video display terminal (VDT) induced dry eye and asthenopia after limited time and close distance of visual tasks under light and dark environment, searching for new strategy for eye-protective electronic screen. The study was randomized, double-blind and controlled. Subjects were enrolled following the criteria: diopter of both eyes not exceeding -6.0D and anisometropia not exceeding 2.0D. and randomly divided into control, AR, AR+CP group in light or dark environment. Character searching, gaming and video tasks utilizing specific smartphones for totally 45 minutes were performed. Researchers measured the indexes of dry eye and asthenopia before and after tasks to evaluate impacts induced by VDT.
Who can participate
Age range
18 Years – 40 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* 1.have basic reading comprehension skills and to be older than 18 years old. 2.diopter of both eyes not exceeding -6.0D and anisometropia not exceeding 2.0D.
Exclusion Criteria:
* presbyopia or decreased regulation function, ocular inflammation and disease, worn contact lens within 1 month, history of eye surgery within 6 months, lactating or pregnant woman, have severe systemic diseases.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1This trial looked at whether a reflective light film on smartphones affects tear break-up time and eye strain — based on what those results showed, would using a screen filter or similar product be worth trying for my dry eye symptoms?
2The trial measured something called HFC, which reflects how hard the eye's focusing system is working — can you explain what that means for my situation and whether my accommodative function has been tested?
3Since this trial is already completed, has any data been published from it yet, and if so, does it show a meaningful difference between using the film and not using it?
4This study focused specifically on smartphone screen exposure as a factor in dry eye disease — do you think my own screen habits are contributing to my symptoms, and should that change how we approach my treatment?
5Are there standard treatments for dry eye and asthenopia that I should consider first, or would findings from a study like this one influence any recommendations you'd make for me right now?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Flourescence tear break-up time
Timeframe: 2 months
2
HFC (high frequency component of accommodative fluctuation)
Timeframe: 2 months
3
non-invasive tear break-up time
Timeframe: 2 months
Trial details
NCT IDNCT06992635
SponsorSecond Affiliated Hospital, School of Medicine, Zhejiang University