Blue Light Blocking Lenses

According to a Yahoo international market survey, Taiwanese people stare at the screen for around 8.5 hours a day. The time that Taiwanese people stare at the smart phone is also the longest compared to other countries, which is even longer than the time we sleep, and it also has a harmful long-term effects on the eyes. Many ophthalmologists indicate that the young generations stare too much time at the screen and their eyes deteriorate faster and faster. For this reason, their vision gets worse and they wear longer and longer their contact lenses.

Now most of the people know that blue light filter lenses (anti blue light) can block harmful blue light and prevent tired and deteriorated eyes and the harmed retina. But what are the lenses that can effectively filter the blue light?

1. First Generation, Blue Light Absorption with Dyes (Yellow Filters):

It is possible to customize the blue-light blocking rate, but generally it doesn't pass over than 50%.

2. Second Generation, Coated Lenses:

The blocking rate of blue light filter lenses in the market is basically between 10% and 20% (most coated lenses are without darkness). The other type is blue Light absorption with dyes (yellow filters), which is possible to customize the blue-light blocking rate, but generally it doesn't pass over than 50%.

3. Third Generation, High Energy Blue-violet Light Filters:

It is very effective in double blocking the harmful light (blue-violet light) with lower wavelengths and high-energy light. According to the test report of ITRI, the blocking rate can attain 89% against the light of 410 nm wavelengths, providing a more effective protection compared to the blue-light filter lenses on the market. In addition, they don't have the disadvantage such as internal reflection as the general blue-light filter lenses, so it is more confortable and clear.

If the blocking rate is 20%, it means that only 20% of blue light is blocked, but there is still 80% of blue light will pass through the lenses and harm our eyes and its retina. However, a higher blue-light blocking rate doesn't mean the better, even the general multi-coated lenses have the blue-light blocking rate around 3-8%. If you are the heavy users of 3C products (computer, communication and consumer electronics), it is highly recommended to use lenses with higher blue-light blocking rate; for example, lenses with around 20% of blue-light or high-energy blue-violet light filters will be your best choice. Moreover, the newest double-protection transitions lenses with blue-light filters are very popular among people wearing glasses since its debut.

There are 4 genres of blue-light filter lenses currently:

1. First Generation, Blue Light Absorption with Dyes (Yellow Filters): It is possible to customerize the blue-light blocking rate. When the blocking rate is higher, the lenses will be darker. Nevertheless, this product will no longer show on our website. We accept only the order by sending us email.

2. Second Generation, Coated Blue-light Filter Lenses (without darkness): We work with the big original equipment manufacturers for foreign brands to fabricate the lenses with the blue-light blocking rate attains around 20%, which are the best coated products for blocking blue-light. In addition, they don't have the internal reflection problem as the general blue-light lenses.

3. Third Generation, High Energy Blue-violet Light Filters: We cooperate with the big original equipment manufacturers for foreign brands. According to the test report of ITRI, the blocking rate can attain 89% against the light of 410 nm wavelengths, providing a more effective protection compared to the general blue-light filter lenses on the market.

4. Fourth Generation, Transitions Lenses Blocking the Blue Light: The ultraviolet from the outdoors and the blue light from the indoor can be filtered to protect the eyes comprehensively.

Different Types of Blue Light Filter Lenses

A Whole New Blue Light Blocking Technology: Lenses Blocking the High-energy Blue-violet Light

【Harmful Visible Light - Blue-violet Light】

Not only ultraviolet A but also visible lights existing in our daily life are harmful for the retinas, especially the blue-violet light (less than 455 nm wavelengths). If the eyes are exposed to the blue-violet light for a long period of time, the photoreceptor cell of retinas will easily be harmed and hardly be repaired. It will also cause age-related macular degeneration (AMD). AMD is the main reason leading to blindness nowadays. This is currently a disease, which cannot be cured.

【Why High-energy Blue-violet Light Needs to be Filtered?】

According to the study extracts of Grindelwald Retina Laboratory in University of Zurich, the eyes exposed to the light with 408 nm wavelengths for 1-2 minutes and to the light with with 430 nm wavelengths for 25 minutes can lead to the death of photoreceptor cell in our retinas.

Longer the eye exposed to the blue-violet light, graver it hurts the eyes. Among the blue-violet lights (less than 455 nm wavelengths), they can hurt differently our eyes. The less the wavelengths are, the stronger the power is. The high-energy blue-violet light is 10 times more dangerous than the low-energy blue-violet light.

【High-energy Blue-violet Filter Lenses】

It can also be called blue-violet filter lenses. This is the new technology of third generation comprehensive eye-protection lenses after the invention of Protection UV380 and Protection UV400. It focuses more on blocking the high-energy harmful light, especially the violet light. Take 1.56 aspheric blue-violet light filter as an example: according to the test report of ITRI, it has a blocking rate with 89% against the light of 410 nm wavelengths. Therefore, it provides a better comprehensive protection compared to those lenses sold in the market. The most importantly, it doesn't have the reflection causing uncomfortability as other blue-light filters (coated style). It is very clear and transparent as the air, and it provides a more comfortable, natural and clear vision for the users.

【Characteristics of Blue-violet Filter Lenses】

● Aspheric Design: Lenses become thiner and have less spherical aberration problems over the rim of glasses, which gives the best quality of optics.

● Waterproof and anti-scratch double-sided coating: Waterproof, anti-fouling and scratch-resistant functionality.

● Protection UV400 blocking the ultraviolet

● Without the reflection problem as other general blue-light lenses. It provides a more comfortable, natural and clear vision for the users.