Blue light glasses are called Reduce eye strain When using Computersimprove yourself to sleep And protect your eye health. You should buy them yourself or your ophthalmologist can prescribe them.
But Do they work?? Or can they harm you?
We Reviewed Evidence. Here's what we found.
what are they
Blue light glasses, blue light filtering lenses or blue blocking lenses are different terms used to explain lenses that reduce the quantity of short wavelength visible (blue) light reaching the eyes.
Most of those lenses really helpful by optometrists reduce the transmission of blue light. 10-25%. Standard (clear) lenses don't filter blue light.
A wide range of lens products can be found. A filter might be added to prescription or non-prescription lenses. They are and are being mass marketed Increasingly popular.
There is commonly an extra cost, depending on the precise product. So, is the additional cost value it?
Blue light is throughout us.
Outdoors, sunlight is the first source of blue light. Indoors, light sources — comparable to light-emitting diodes (LEDs) and digital device screens — emit various degrees of blue light.
The amount of blue light emitted by artificial light sources is far lower than that of the sun. After all, artificial light sources are throughout us, at home and at work, and we will spend a whole lot of time indoors.
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Our research team on the University of Melbourne, along with colleagues at Monash University and City, University of London, tried to see if the most effective available evidence supports using blue light filtering glasses, or in the event that they should. Can cause any damage. So we held one. Systematic review To collect and evaluate all relevant studies.
We included all randomized controlled trials (clinical studies designed to check the results of an intervention) that evaluated blue light filtering lenses in adults. We identified 17 eligible trials from six countries, involving a complete of 619 adults.
Do they reduce eye strain?
We found no profit to using blue light-filtering lenses over standard (clear) lenses to cut back eye strain from computer use.
This conclusion was based on consistent results from three studies that examined the results on eye strain over time periods starting from two hours to 5 days.
Do they enable you sleep?
Potential effects on sleep were uncertain. Six studies examined whether wearing blue-filtering lenses before bed could improve sleep quality, and the outcomes were mixed.
These studies included individuals with a wide range of medical conditions, including insomnia and bipolar disorder. Healthy adults weren't included within the study. So we don't yet know whether these lenses affect sleep quality in the overall population.
Do they promote your eye health?
We found no clinical evidence to support using blue light filtering lenses to guard the macula (the region of the retina that controls high-detail, central vision).
No studies have evaluated this.
Can they do harm? What causes headaches?
Compared to plain (non-blue light filtering) lenses, we couldn't draw clear conclusions about whether wearing blue light filtering lenses could cause harm.
Some studies reported how study participants experienced headaches, mood swings and discomfort from wearing glasses. However, people using standard contact lenses reported similar effects.
What about other benefits or disadvantages?
There are some necessary general considerations when interpreting our results.
First, most studies were of relatively short duration, which limited our ability to think about long-term effects on vision, sleep quality, and eye health.
Second, the review examined effects in adults. We don't yet know if the results are different for youngsters.
Finally, we couldn't draw conclusions concerning the potential effects of blue light-filtering lenses on many vision and eye health measures, including color vision, since the studies didn't examine them.
in brief
Overall, based on the relatively limited published clinical data, our review doesn't support using blue light filtering lenses to cut back eye strain with digital device use. It is unclear whether these lenses affect visual quality or sleep, and no conclusions might be drawn about any possible effects on retinal health.
High-quality research is required to reply these questions, in addition to whether the effectiveness and safety of those lenses varies amongst people of various ages and health conditions.
If you could have eye strain, or other eye or vision concerns, check with your optometrist. They can perform a radical examination of your eye health and vision, and discuss any relevant treatment options.