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Yellow screen shields eyes from digital strain, study finds

NCT ID NCT07340359

Symptom relief Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether a special yellow-light, anti-glare phone screen could reduce eye strain and dryness caused by using a phone for 2 hours in a dim room. 70 adults with mild nearsightedness took part. Researchers measured tear quality, eye redness, and other signs of eye fatigue before and after reading. The goal was to see if this screen offers better protection than a standard screen.

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

70 people

The number who actually took part.

Started

Jan 2026

Finished

Feb 2026

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

18 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: * 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: * 1.presbyopia or decreased regulation function, 2.ocular inflammation and disease, 3.worn contact lens within 1 month, 4.history of eye surgery within 6 months, 5.lactating or pregnant woman, 6.have severe systemic diseases.

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Conditions

The condition(s) this trial relates to.

asthenopia dry eye syndrome

As listed by the trial registrant

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

Asthenopia Computer vision syndrome Digital eye strain Dry eye

Contacts and locations

Locations

  • The Second Affiliated Hospital Zhejiang University School of Medicine (SAHZU)

    Hangzhou, Zhejiang, 310000, China

More trials for these conditions

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