About Pricing FAQs Providers Blog

Loading clinical trials...

Your health journey, clearly organized.

Find Clinical Trials →

Legal

Privacy Policy
Terms of Service

© 2026 Clareo Health. All rights reserved.

Back to clinical trial search

COMPLETEDNANCT06745661

Impact of Red Light Therapy on Alleviating Visual Fatigue in Presbyopes

Visual fatigue, or asthenopia, occurs when visual demands exceed the capacity of the visual system, leading to various ocular discomfort and systemic symptoms. This condition can negatively affect per...

Lead sponsor: The Hong Kong Polytechnic University•1 locations•View source on ClinicalTrials.gov

Clareo plain-language summary

What this study is about

Generating AI summary...

Save this trial guide to your notes

Keep your clinical trial research organized — questions to ask, what to expect, and key details.

Sponsors

Lead Sponsor

The Hong Kong Polytechnic University

Age

40 - No limit years

Sex

ALL

Healthy Volunteers

No

Inclusion Criteria

•Individuals aged over 40 years old.
•Self-reported visual fatigue symptoms.
•Distance best-corrected visual acuity (BCVA) of 0.5 LogMAR or better, and near visual acuity worse than N8 (20/50) at 40 cm with the subject's habitual distance correction.
•Require near correction in daily life.
•No light therapy received in the past six months.
•Giving informed written consent.

Exclusion Criteria

•Presence of diseases that can cause eye pain or headaches, such as strabismus, glaucoma, ocular trauma, conjunctivitis, migraines, keratitis, iridocyclitis, or other self-reported diseases.
•Systemic diseases (e.g., epilepsy, photosensitivity, seizure) or illiteracy.
•Afterimage time longer than 6 minutes.

Related studies

Performance of Two Daily Disposable Multifocal Contact Lenses

NCT07444658 · Presbyopia

Presbyopic Wear Experience With Multifocal Lenses Compared to Single Vision Lenses and Reading Glasses

NCT07218731 · Presbyopia Correction, Presbyopia

IC-8 Apthera IOL New Enrollment Post Approval Study

NCT06060041 · Cataract, Presbyopia, and more

A Planned Study at Multiple Sites is Being Done to Compare the Results of Two Types of Trifocal Toric Intraocular Lenses Used in Cataract Surgery

NCT07232615 · Presbyopia Correction, Astigmatism, and more

Clinical Applications of Advanced Ophthalmic Imaging

NCT03135327 · Multiple Sclerosis, Dry Eye Syndromes, and more

View all related studies →

Data from ClinicalTrials.govLast updated on ClinicalTrials.gov: September 24, 2025Terms

Trial snapshot

StatusCOMPLETED

PhaseNA

Enrollment66

Start dateFeb 2025

Last updatedSep 24, 2025

Condition

Asthenopia Visual Fatigue Presbyopia

Locations shown

The Hong Kong Polytchnic University

Hong Kong

For caregivers

Use Clareo to keep notes, questions, trial details, and next steps organized before and after appointments.

Start free trial →

Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: September 24, 2025Data synced to Clareo: June 28, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

View ClinicalTrials.gov Terms and Conditions