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Effect of Smart Phone Reflective Light Film on Dry Eyes and Asthenopia

NCT06992635 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 120

Last updated 2025-11-20

No results posted yet for this study

Summary

This study aimed to evaluate the effect of anti-reflection (AR) and circularly polarized (CP) film on video display terminal (VDT) induced dry eye and asthenopia after limited time and close distance of visual tasks under light and dark environment, searching for new strategy for eye-protective electronic screen. The study was randomized, double-blind and controlled. Subjects were enrolled following the criteria: diopter of both eyes not exceeding -6.0D and anisometropia not exceeding 2.0D. and randomly divided into control, AR, AR+CP group in light or dark environment. Character searching, gaming and video tasks utilizing specific smartphones for totally 45 minutes were performed. Researchers measured the indexes of dry eye and asthenopia before and after tasks to evaluate impacts induced by VDT.

Conditions

  • Dry Eye Disease (DED)
  • Asthenopia

Interventions

BEHAVIORAL

using non-processing screens

ask subjects to use non-processing screens

BEHAVIORAL

using AR+CP screens

ask subjects to use AR+CP screens

Sponsors & Collaborators

  • Second Affiliated Hospital, School of Medicine, Zhejiang University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-06-01
Primary Completion
2024-10-30
Completion
2024-10-30

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06992635 on ClinicalTrials.gov