What is Blu-ray?

Anti-blue light glasses are glasses that prevent blue light from irritating the eyes. Special anti-blue light glasses can effectively isolate ultraviolet rays and radiation and can filter blue light, which is suitable for watching computers or TV mobile phones.

Anti-blue light glasses

Anti-blue light glasses are glasses that prevent blue light from irritating the eyes. Special anti-blue light glasses can effectively isolate ultraviolet rays and radiation and can filter blue light, which is suitable for watching computers or TV mobile phones.

Chinese name

Anti-blue light glasses

Foreign name

Blue light proof glasses

Attributes

eye

Function

Anti-blue light, eye protection

Blue light is part of natural visible light, and both blue light and electronic screens emit blue light. ^[1-2]

As early as 1966, Nell et al. Found that irradiation with blue light can cause damage to retinal cells, leading to decreased vision or even loss of vision. Among them, the short-wave blue light between 400-450 nanometers is the most harmful to the retina.

At the 2010 annual meeting of the International Light Association, the world s top optical experts unanimously pointed out that short-wave blue light has extremely high energy and can penetrate the lens directly to the retina. Blue light irradiates the retina to generate free radicals, and these free radicals can cause the death of retinal pigment epithelial cells. The death of epithelial cells can cause the lack of nutrients in light-sensitive cells and cause vision damage. These damages are irreversible.

A research report by the German ophthalmologist Professor RHW Funk pointed out that when "unsuitable light" continues to illuminate our eyes, it can also cause physical dysfunction. ^[3]

1. Injury eyes: harmful blue light has extremely high energy, can penetrate the lens directly to the retina, causing atrophy and even death of retinal pigment epithelial cells. The death of light-sensitive cells will cause vision loss or even complete loss, and this damage is irreversible. Blue light can also cause macular degeneration. The lens in the human eye will absorb part of the blue light and gradually become cloudy to form a cataract, and most of the blue light will penetrate the lens, especially children's lenses are clearer and cannot effectively resist blue light, which may lead to macular disease and cataracts.

2. Fatigue: Due to the short wavelength of blue light, the focal point does not fall on the center of the retina, but on the front side of the retina. To see clearly, the eyeball will be in a tense state for a long time, causing visual fatigue. Long-term visual fatigue may lead to symptoms such as deepened myopia, double vision, easy serialization when reading, and inability to concentrate, which affects people's learning and work efficiency.

3. Poor sleep: Blue light can inhibit the secretion of melatonin, which is an important hormone that affects sleep. Its known role is to promote sleep and regulate jet lag. This can also explain why playing with a mobile phone or tablet computer before going to bed can cause poor sleep quality and even difficulty falling asleep.

Anti-blue light glasses can effectively reduce the continuous damage of blue light to the eyes. Through the portable spectrum analyzer, the blue light intensity of the screen of the mobile phone is effectively suppressed after the use of the anti-blue light glasses, which reduces the harmful blue light to the eyes.

1. Substrate absorption: The anti-blue light factor is added to the lens substrate to absorb harmful blue light in life to achieve the protective purpose of blue light blocking.

How to identify anti-blue light glasses? The professional method is to use a grating spectrometer to detect, of course, there are some simple and easy to use identification methods.

Anti-blue light glasses are suitable for use when using LED digital display devices such as televisions ^[4] , computers, PADs, and mobile phones. However, it is not recommended to wear anti-blue light glasses for a long time in daily life, because anti-blue light glasses filter part of the blue light. It will be yellowish. It is recommended to use two pairs of glasses, one pair of ordinary glasses for daily use, and one pair of anti-blue glasses for use with computers and other LED display digital products. Flat-light (no power) blue-proof glasses are very popular with non-myopia users. They are used exclusively for computer office wear and have gradually become a fashion. ^[3]