What are these gadgets doing to our eyes?
Thursday, 4 June 2015 | Direct Specs
No, we're not suggesting you give up using your treasured smart-phone or tablet, but we do recommend trying to reduce the downside such devices have on your eyes.
Certain wavelengths of the natural spectrum of light emitted by the sun are beneficial in helping to regulate our body clock. Unfortunately, particular wavelengths of blue light have also been found to be detrimental to health and vision when not controlled.
With the ever-growing use of LED and LCD devices which emit blue light, users are at risk of higher than natural levels of exposure. Research has shown that too much blue light can cause eye-strain, eye fatigue and even disturbed sleep. This is in addition to the general fatigue caused by concentrating on often very small text, on an unnaturally illuminated surface.
To counter these risks, optical scientists have developed a new type of lens filter to reduce the amount of blue light transmitted to the eyes. OptiBlue filters selected wavelengths of blue light, giving enhanced comfort when using any digital device that has an LCD or LED screen. Our own tests on phone and computer screens, while purely subjective, do seem to bear out the manufacturer's claims of a more comfortable viewing experience when using devices for a few hours per day. We suspect phone or computer use is only likely to affect sleep patterns if used extensively for a prolonged period - something that is not easy to test!
OptiBlue lenses are also equipped with the latest anti-reflection, ant-scratch and water and grease repellent features, offering superior clarity for the lifetime of the lenses.