Blue light glasses are largely marketed as a solution to eye strain and as a protectant for the retina. Their effectiveness is not backed up by the science, however. While they are successful in blocking blue light, blue light is not necessarily something that needs to be filtered out for ocular health.

Blue light lenses can help mitigate the impact of blue light by limiting how much reaches your eyes, supporting the natural release of melatonin and promoting a more restful and rejuvenating sleep.

A major blue cut lenses disadvantage is that the lenses have a bluish reflection. The lenses of blue light filter glasses exhibit a little bluish sheen since they are designed to reflect this blue light. This isn't something you'll notice when you're wearing them, but it's a feature that others will notice.

The evidence for them, though, has largely been lacking. And a new review of 17 studies adds to a growing consensus that they probably don't prevent or relieve eye strain. The phrase blue light refers to a range of wavelengths of light that are all around us - the sun emits it and so do screens.

Like sunglasses, blue light glasses can have long-term eye health benefits. But should you wear them all the time? You can wear your blue light glasses all the time, just like you can wear sunglasses all the time. But when and where you wear your eyewear can make a difference in the quality of your vision.

about 2 days to 3 weeks It usually takes about 2 days to 3 weeks to get use to computer glasses. A blue light filtering coating may take a few days or weeks to get used to due to minor colour distortion.

A 2017 study of 80 computer users found that after one month of using lenses coated with a blue blocking coating, one-third felt they received benefit. They claimed that the glasses improved vision and reduced glare while they used digital screens.

Like sunglasses, blue light glasses can have long-term eye health benefits. But should you wear them all the time? You can wear your blue light glasses all the time, just like you can wear sunglasses all the time.

Blue light glasses are safe to wear all the time, but it's important to consult with your eye doctor before introducing blue light glasses into your routine. Your eye doctor can help you select a pair of good quality and well-fitting glasses for your specific vision and lifestyle needs.

Blue light is needed for good health: It boosts alertness, helps memory and cognitive function and elevates mood. It regulates circadian rhythm – the body's natural wake and sleep cycle. Exposure to blue light during daytime hours helps maintain a healthful circadian rhythm.

Blue light glasses are safe to wear all the time, but it's important to consult with your eye doctor before introducing blue light glasses into your routine. Your eye doctor can help you select a pair of good quality and well-fitting glasses for your specific vision and lifestyle needs.

Eye Health and Vision Fatigue Studies had from five to 156 participants and ran from less than a day to five weeks. The analysis of the trials showed that there is no short-term advantage to using blue-light-filtering spectacles for reducing vision fatigue, compared with standard clear lenses.