NCT06739525

Effects of Blue of Glasses VS Standard Lenses on Contrast Sensitivity & Visual Fatigue in Myopic & Non-Myopic Adults

The Effects of Blue of Blue Light-blocking Glasses Versus Standard Lenses on Contrast Sensitivity & Visual Fatigue in Myopic & Non-Myopic Adults

• Status: Active Not Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 64 (actual)
• Sponsor: Superior University · Academic / Other
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

This study investigates the effects of blue light-blocking glasses compared to standard lenses on contrast sensitivity and visual fatigue in myopic and non-myopic adults. With the growing use of digital screens, blue light exposure has raised concerns due to potential eye strain, sleep disruption, and visual fatigue.

Detailed description

While blue light-blocking lenses are marketed to address these issues, evidence of their efficacy, particularly for different refractive errors like myopia, remains inconclusive. Using a randomized controlled design, this study will assess both groups across specific visual tasks to measure contrast sensitivity and visual fatigue. Outcomes are evaluated using validated tools, including the Computer Vision Syndrome Questionnaire (CVS-Q) and Visual Fatigue Questionnaire (VFQ), with measurements taken at baseline, 2 weeks, and 4 weeks. Findings are expected to clarify the potential advantages of blue light-blocking glasses over standard lenses, aiding in evidence-based recommendations for adults with varying visual needs.

Conditions

• Myopia

Interventions

Type	Name	Description
COMBINATION_PRODUCT	Blue Light-Blocking Glasses (Intervention Group)	Participants in this arm wore blue light-blocking glasses designed to filter out a portion of short-wavelength blue light. These lenses were intended to reduce eye strain and protect against blue light exposure, especially during prolonged screen time. Participants used blue light-blocking glasses consistently throughout the study period to assess their effect on contrast sensitivity and visual fatigue.
DIAGNOSTIC_TEST	Standard Lenses (Control Group)	Participants in this arm wore standard lenses without any blue light-blocking properties. These lenses allow the full spectrum of visible light to pass through and serve as a baseline control to measure against the blue light-blocking glasses. Participants used these lenses under the same conditions to assess contrast sensitivity and visual fatigue without blue light filtration.

Timeline

• Start date: 2024-02-28
• Primary completion: 2024-08-01
• Completion: 2025-01-31
• First posted: 2024-12-18
• Last updated: 2024-12-18

Locations

1 site across 1 country: Pakistan