Do blue-blocking lenses reduce eye strain from extended screen time? A double-masked, randomized controlled trial.

  title={Do blue-blocking lenses reduce eye strain from extended screen time? A double-masked, randomized controlled trial.},
  author={Sumeer Singh and Laura Elizabeth Downie and Andrew J Anderson},
  journal={American journal of ophthalmology},
Blue-blocking filters do not alleviate signs and symptoms of digital eye strain.
The B-B filter did not alter OO muscle activity or visual symptomatology significantly during the execution of a 30-min reading task in asymptomatic subjects, supporting the idea that B- B filters do not attenuate signs and symptoms of digital eye strain.
Randomised controlled trial of an accommodative support lens designed for computer users
This study aims to investigate if accommodationative support lenses improve CVS symptoms, binocular/accommodative functions predict a benefit from AS lenses, and wearing AS lenses for six months impacts on binocular-accom modative functions.
Application of colored filters in patients post-traumatic brain injury: A review.
There is a paucity of information related to the therapeutic use of tinted lenses to mitigate post-traumatic light sensitivity and migraines, but patients will subjectively report improved symptoms, specifically with precision tints or FL-41.
Ocular Causes for Headache.


A double-blind test of blue-blocking filters on symptoms of digital eye strain.
Management of other ocular factors, as well as the creation of an optimal environment for screen viewing, are more likely to provide greater success in minimizing symptoms.
Short-Wavelength Light-Blocking Eyeglasses Attenuate Symptoms of Eye Fatigue.
The hypothesis that short-wavelength light-blocking eyeglasses may reduce eye strain associated with computer use based on a physiologic correlate of eye fatigue and on subjects' reporting of symptoms typically associated with eye strain is supported.
Effect of Blue Light–Reducing Eye Glasses on Critical Flicker Frequency
The higher the blocking effect of the lens, the lower the reduction in the CFF, suggesting that blocking short-wavelength light can reduce eye fatigue.
Blue-Light Filtering Spectacle Lenses: Optical and Clinical Performances
Blue-light filtering spectacle lenses can partially filter high-energy short-wavelength light without substantially degrading visual performance and sleep quality and may serve as a supplementary option for protecting the retina from potential blue-light hazard.
Digital eye strain: prevalence, measurement and amelioration
A range of management approaches exist for DES including correction of refractive error and/or presbyopia, management of dry eye, incorporating regular screen breaks and consideration of vergence and accommodative problems.
Optical correction of refractive error for preventing and treating eye symptoms in computer users.
The evidence on the effectiveness, safety and applicability of optical correction of refractive error for reducing and preventing eye symptoms in computer users and their effect on health related quality of life was examined.
Factors Associated with Visual Fatigue from Curved Monitor Use: A Prospective Study of Healthy Subjects
The curvature of the monitor was related to the visual fatigue and the score of “eye pain” was significantly higher for the flat monitor versus the 1000R curved monitor after the visual tasks (p = 0.034).
The effect of blue‐light blocking spectacle lenses on visual performance, macular health and the sleep‐wake cycle: a systematic review of the literature
Blue‐blocking (BB) spectacle lenses, which attenuate short‐wavelength light, are being marketed to alleviate eyestrain and discomfort when using digital devices, improve sleep quality and potentially
Blue‐light filtering ophthalmic lenses: to prescribe, or not to prescribe?
  • L. Downie
  • Physics
    Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians
  • 2017
Reassuringly, recent research suggests that even under extreme, long-term viewing conditions, the level of bluelight exposure from computer screens and mobile devices is significantly less than the levels of blue-light exposure from natural daylight, and further, such exposures do not approach international safety limits.