CompletedNot Applicable

Exploring the Impact of Dynamic Defocus Display Schemes on Ocular Health Indicators

China36 participantsStarted 2025-08-20

Plain-language summary

The present study is designed to explore the effects of dynamic defocus display technology on ocular health parameters using rigorous scientific approaches. It further examines the mechanisms through which this technology alleviates visual fatigue, thereby providing robust clinical evidence to support its practical application and widespread adoption.

Who can participate

Age range

20 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: Adults aged between 20 and 40 years, regardless of gender; Refractive anisometropia ≤2.5D and corrected visual acuity of 1.0 or above in both eyes; Habitual long-term use of electronic devices with LED light sources, such as computers and smartphones; Currently not using any other blue light protection products or having ceased the use of such products for at least 2 weeks; No known visually significant ophthalmic diseases; Willing to participate in the trial and having signed the informed consent form. Exclusion Criteria: Abnormal accommodative function or other visual function abnormalities (e.g., strabismus, amblyopia); Severe dry eye or history of ocular medication use; Acute or chronic ocular surface inflammation, keratoconus, history of ocular surgery (e.g., refractive surgery), systemic diseases, or other conditions (e.g., wearing orthokeratology lenses and using atropine); Photosensitivity, history of epilepsy, etc.; Individuals unable to cooperate with the examination.

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 studied something called 'dynamic defocus display schemes' — can you explain what that means in plain terms, and whether changing how screens display images could realistically help with my eye strain or myopia?
2The trial measured things like amplitude of accommodation and accommodative facility — what do those terms mean for my day-to-day vision, and are those the right indicators to be tracking for my specific situation?
3Since this trial is already completed, has my doctor seen or heard anything about what the results showed, and whether dynamic defocus technology is something worth considering for managing my visual fatigue?
4This study was categorized as 'Phase NA,' which I understand means it wasn't testing a drug — so what are the realistic risks or downsides of a display-based intervention like this, compared to other approaches my doctor might recommend for myopia or eye strain?
5If this kind of screen-based approach didn't pan out or isn't yet available, what are the current standard options my doctor would suggest for managing both visual fatigue and myopia progression at the same time?

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

Binocular Visual Function(amplitude of accommodation)

Timeframe: Baseline (before intervention), immediately after the 50-minute video-watching task for each of the five sessions, totaling ten completions per participant.

Binocular Visual Function（accommodative facility）

Timeframe: Baseline (before intervention), immediately after the 50-minute video-watching task for each of the five sessions, totaling ten completions per participant.

Trial details

NCT IDNCT07291856

SponsorBeijing Tongren Hospital

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-11-20

View on ClinicalTrials.gov More Visual Fatigue trials

Plain-language summary

Who can participate

Age range

20 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.

What they're measuring

Binocular Visual Function(amplitude of accommodation)

Timeframe: Baseline (before intervention), immediately after the 50-minute video-watching task for each of the five sessions, totaling ten completions per participant.

Binocular Visual Function（accommodative facility）

Timeframe: Baseline (before intervention), immediately after the 50-minute video-watching task for each of the five sessions, totaling ten completions per participant.