Blue Light is a relatively high energy light having a wavelength between 380 nm and 480 nm. The blue light in this wavelength will increase the amount of toxin in the macular area in the eye, which seriously threatens the health of our fundus and causes blue eye blindness.
Blue light main hazard
Causing glare
Since short-wavelength light has a relatively high energy, the incidence of fine particles in the air is high, which is the main cause of glare. Patients with retinopathy and post-operative surgery (excimer surgery, cataract surgery) are very sensitive to light and can feel abnormal glare, which is also caused by short-wave blue light.
Visual fatigue
When the visible light is focused in the eye, the focus is different, and a focal distance difference is formed between the two focal points. This is the main reason for the blurring of vision. Long-term visual fatigue can cause other symptoms of fatigue. The injection of blue light exacerbates the focus distance difference and visual blur. Because the blue light is focused, the focus does not fall on the retina, but falls between the retina and the lens. Increases the focus distance difference in which the light is focused in the eye.
There are various anti-Blu-rays on the market, and how to distinguish whether the mobile phone film you bought is resistant to blue light. The following two mobile phone films, "Lighting Passport", are one for the Blu-ray mobile phone film and one for the ordinary tempered film.
This is an anti-blue light mobile phone film with a penetration rate of 17%, indicating that the film's rejection rate for blue light is 83%.
This is a normal tempered film with a penetration rate of 73% and a blue light rejection of 17%.
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