Screens are most of the day now. The average American spends close to seven hours a day looking at one, and a lot of people reach for blue light glasses because of it. We sell a pair. Here is what they do, and what they don’t.
What the research says
In 2023, Cochrane — the organisation that reviews medical evidence for a living — pooled seventeen randomised trials of blue-light filtering spectacle lenses. The conclusion was blunt. They probably make no difference to eye strain from computer use. They probably make no difference to vision quality. There is no reliable evidence that they protect the back of the eye or improve sleep.
That is the most careful look anyone has taken at the question, and it does not support the claim that these lenses fix tired eyes.
Why eyes get tired anyway
Eye strain from screens is real. The causes are well understood, and none of them is the colour of the light. You blink less when you stare at a screen, so your eyes dry out. You hold the screen too close. The room is too bright, or too dim. You don’t look away for hours at a time.
What helps, according to the people who study it: every twenty minutes, look at something twenty feet away for twenty seconds. Fix the lighting. Move the screen back. Blink on purpose. None of it is glamorous and nobody can sell it to you.
So why do we make them
Because a clear-lens frame is a useful thing to own. You can wear it indoors, at a desk, on camera, in the evening, when sunglasses would be absurd. Ours filter part of the blue wavelength coming off a screen — that part is true. Filtering it just doesn’t do what the industry says it does.
Buy a pair because you want a frame for the hours you spend inside. Not because someone told you your eyes were in danger.
