Blue-light lenses fail to help vision

Blue-light filtering lenses made no clinical improvements to visual performance, macular protection, visual fatigue or sleep quality, compared with non‐blue‐light filtering lenses. blue‐light filtering lenses 

A systematic review led by the University of Melbourne, published in Cochrane Library, revealed that the effects of blue‐light filtering lenses had no difference in subjective visual fatigue scores; little to no difference in critical flicker‐fusion frequency or best‐corrected visual acuity; and effects on sleep quality were inconsistent.  

There were no studies recorded to determine effects on contrast sensitivity, colour discrimination, discomfort glare, macular health, serum melatonin levels or overall patient visual satisfaction. 

Further trials were required to better define the effects of blue‐light filtering lenses. 

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