Can these glasses save your eyes from screens?
NCT ID NCT06984783
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a new type of blue-blocking glasses designed to reduce eye strain from computer screens. Twenty-five adults wore the glasses while working on digital devices, and researchers measured changes in eye fatigue, tear film stability, and focusing ability. The goal was to see if these glasses could help protect eyes from the discomfort caused by prolonged screen time.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- blue-blocking glasses
- What this could lead to
- If effective, these glasses could offer a simple way to reduce eye strain and discomfort from screen use.
- What could go wrong
- This is a small, early study with only 25 participants, so results may not apply to everyone. The glasses only filter certain light wavelengths, and benefits may be modest.
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
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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
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25 people
The number who actually took part.
- Started
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Apr 2025
- Finished
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Jul 2025
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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\. Adult population, regardless of gender 2. Refractive error is less than or equal to -2.5D and both eyes achieve corrected visual acuity of 0.8 or higher. 3. Normal intraocular pressure with no organic pathology. 4. No apparent symptoms of dry eye. 5. Willing to cooperate to complete all the tests. 6. Voluntarily signing the informed consent form. Exclusion Criteria: * 1: Individuals with strabismus and amblyopia exist. 2: Suffering from congenital eye conditions such as congenital cataracts or congenital retinal diseases. 3: Those who have undergone intraocular surgery (such as cataract removal, intraocular lens implantation, etc.). 4: Individuals with refractive media opacity (such as corneal lesions, lens opacity, etc.). 5: Abnormal intraocular pressure (IOP) (IOP \< 10 mmHg or IOP \> 21 mmHg, or a bilateral IOP difference of ≥5 mmHg). 6: Abnormal intraocular pressure (IOP) (IOP \< 10 mmHg or IOP \> 21 mmHg, or a bilateral IOP difference of ≥5 mmHg). 7: Only one eye meets the inclusion criteria. 8: Active corneal infections such as bacterial, fungal, viral, or other acute or chronic anterior segment inflammations. 9: Currently using medications that may lead to dry eye or affect vision and corneal curvature. 10: Other ocular conditions, such as dacryocystitis, eyelid disorders and abnormalities, abnormal intraocular pressure, and glaucoma. 11: Unable to undergo regular eye examinations.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Beijing Tongren Hospitol,Capital Medical University
Beijing, Beijing/China, 100730, China