There are many different colors of light, all of which have different wavelengths. Blue light is visible to the human eye and makes up the electromagnetic spectrum’s blue portion.
The sun is the primary source of blue light. However, blue light also comes from electronic devices, such as computers, smartphones, laptops, tablets, and indoor lighting. Sometimes, individuals use blue light glasses to protect their eyes from exposure.
In this article, we discuss some things to consider.
Is blue light harmful to the eyes?
Blue light has a wavelength that is roughly 400–500 nanometers (nm). Some researchers believe that blue light can damage the human eye, stating that peak light damage occurs at approximately 440 nmTrusted Source.
According to a 2018 study that draws on evidence from animal studies, blue light can pass through the eye’s cornea and lens, where it may cause several health issues, including:
- dry eye
- cataracts
- age-related macular degeneration
- enhanced hormone production, which can directly impact sleep quality
- Computer vision syndrome
Yet another study notes that exposure to blue light before a person goes to bed can disrupt their sleeping patterns, leading to poor sleep quality.
Overall, more research will help determine whether long-term exposure to blue light from electronic devices is harmful to a person’s eyes or vision.
What are blue light glasses?
A person wears blue light glasses to block out or filter blue light.
Manufacturers claim that filtering the light protects the eye from potentially harmful effects. Some companies that manufacture blue light glasses also claim that their glasses can help:
- prevent headaches
- reduce eyestrain
- improve sleep quality
Do they work?
There is no conclusive scientific evidence to suggest that blue light glasses can protect a person’s eyes.
A 2017 systematic review concludes that there was insufficient evidence to support the successful use of blue light glasses to improve visual performance or sleep quality.
It also states that these glasses did not work toward alleviating eye fatigue or protecting macular health.
Further more, the American Academy of Ophthalmology states there is not enough evidence to suggest that using blue light-filtering glasses benefits people’s health.
Shuold we use blue cut lenses?
In India almost all available all blue-light-blocking lenses have Anti-reflective/anti glare coating on both sides or one of the side of lens. This coating is most necessary for lens materials that have a high index of refraction, as these lenses reflect more light than plastic lenses,reasults MORE CLEAR VISION.
On the other hand all blue-light-blocking lenses are infused with melanin, which filters out up to 98% of blue light,which gives slight yellowish vision.
Depending on whether optic clarity or color accuracy is the deciding factor, you may prefer to order glasses with either anti-glare or blue-cut anti glare lenses.
in a line If blocking more of the blue light that emanates from digital devices is your top priority, anti-blue light glasses are the best choice.
choose your perfect pair of lenses for your all family members.
