The Truth that you may not know about Blue Block Lenses

Nowadays, the "Blue-block lens/Anti-blue light lens" is nothing new in the lens industry.

But maybe there are some misunderstandings that you or your clients may have about this.

Now please let me explain you some of the truth that you may not know and we hope that this article may help you.

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Most people think that: A blue light penlight is similar to a UV light, and the lens that cannot be penetrated by UV rays is a good lens. In the same way, the lens that blue light cannot penetrate is the anti-blue light lens.

The truth is: Blue light is a segment of light with a wavelength within a certain range, as seen on the spectrum chart below

Blue light from light to dark (turquoise, light blue, sky blue, sea blue, dark blue, violet, etc.) Due to lens materials, coating process, manufacturing technology, research and development capabilities, etc., different lens manufacturers have different wavelength bands that block blue light. In addition, different blue light penlights emit different blue light bands.

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Most people think that: Blue light can cause visual fatigue and eye fatigue, so it is harmful and needs to be blocked.

The truth is: Blue-green light can improve mood, improve cognition, and regulate sleep cycles. Therefore, it is necessary to let the beneficial blue light pass through the lens as much as possible

Beneficial Blue Light

Band 455-505nm

Blue-violet light does the most damage to the outer layer of the retina, which may lead to the gradual degeneration of retinal cells and is an important factor in macular degeneration. Therefore, it is particularly important to reduce harmful blue light passing through the lens.

Harmful blue light

Band 415-445nm

Some anti-blue light lenses have inaccurate blue light blocking bands, which not only prevent the beneficial blue light, but even some brands of anti-blue lenses also prevent the light that does not belong to the blue light band, which has a serious impact. The light transmittance of the lens, as well as the clarity of vision, lead to visual fatigue. This is like the bacteria in the human body, the harmful bacteria must be killed, and the probiotics must be retained. You can't let all human cells get killed.

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Most people think that: For anti-blue light lenses, the more yellow the better, the better the anti-blue light effect.

The truth is: The yellow base color may causes

Lens transmittance affected.

Color cast appears when look at things.

The lenses are not aesthetically pleasing and the vision is distorted.

Excellent anti-blue light lenses do not "one size fits all" blue light, the more the better, but selectively "cut" and intelligently "protect". It is not only necessary to leave beneficial and block harmful blue light, but also to ensure the light transmittance and aesthetics of the lens to the greatest extent, pay attention to the clarity of the "vision" and ensure the comfort and health of the eyes.

FOR GOOD LENSES, PLEASE CONTACT US

Nanjing Albert International Co., Ltd.

Website: www.albert-international.com

Email: info@albertint.com