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New screen tech aims to soothe tired eyes

NCT ID NCT07291856

Symptom relief Sponsor: Beijing Tongren Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a 'dynamic defocus' display mode can help reduce visual fatigue in adults who regularly use screens. 36 participants watched videos with different display settings, and researchers measured eye focus ability and tiredness. The goal is to find a simple way to make screen time easier on the eyes.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
dynamic defocus display technology
What this could lead to
If it works, this could lead to a way to reduce eye strain for people who spend long hours on screens.
What could go wrong
This is a small, early study with only 36 participants, so results may not apply to everyone. The effect on preventing myopia or long-term eye health is not yet proven.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

36 people

The number who actually took part.

Started

Aug 2025

Finished

Nov 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

20 to 40 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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.

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Conditions

The condition(s) this trial relates to.

asthenopia myopia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Myopia Visual fatigue

Contacts and locations

Locations

  • Beijing Tongren Hospitol,Capital Medical University

    Beijing, Beijing Municipality, 100730, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.