UV is not the whole story.
Give your eyes greater protection with UV+420cut technology
UV light and other forms of high-energy light, come not just from sunny skies. They also come at us from cloudy or rainy skies, and even in reflected light*1.
Short-term exposure to UV rays can cause photokeratitis, which is sunburn of the eye. Over a long periods, it can lead to cataracts*2. As for the light we can see, it is made up in part of high-energy visible light (HEV light), which is known to potentially cause Age-related Macular Degeneration (AMD) as we get older*3.
UV+420cut™ technology is used to make clear lenses that cut HEV light in the 400–420 nm part of the spectrum, in addition to blocking all UV wavelengths. This means it provides greater protection against the types of light that can damage the eyes.
Young people are at higher risk for retinal damage, because their lenses are generally more transparent*4.
Photo: UV intensity comparison
80–90% of the UV rays get through on days with light clouds vs. clear days. That number is around 60% on cloudy days and 30% on rainy days*5.
Discover the difference between lenses with UV+420cut and regular lenses.
Two key points about UV +420cut
Block harmful light in the 400–420 nm part of the spectrum in addition to UV.
Colors look natural even when 400–420 nm light is blocked.
Protect eyes from UV and high-energy visible (HEV) light.
Light is categorized by wavelengths, the shortest being ultraviolet, followed by visible and infrared. The shorter the wavelength, the higher the energy. Visible light refers to electromagnetic radiation with wavelengths from around 400 nm to 700 nm. As the wavelengths increase within that spectrum, the colors we see range from violet to red.
UV-C, characterized by wavelengths of up to 280 nm, is absorbed by the ozone layer in the atmosphere. UV-B, with wavelengths from 280 nm to 315 nm, is completely absorbed by the cornea at the surface of the eye. Of the longer wavelength UV-A light (315–400 nm), most is absorbed by the cornea. But of the light that passes through the cornea, almost all is absorbed by a part of the eye called the lens, with about 1% passing through the lens and reaching the retina. Exposure to these UV rays are known to cause photokeratitis (sunburn of the eye) and lead to chronic problems such as pterygium and cataracts. By cutting down on UV rays*1, we can reduce damage to the cornea and lens.
HEV light passes through the cornea and lens
FQA for Prescription Lenses
1. Can you make Glasses according to my Prescription?
We are Professional Eyeglasses Supplier, we cooperate with lots of Frame and Lenses Factories and we can also customize every type Lenses according to the buyer’s requirement.
2. What’s information i need to provide?
We need Right and Left eye SPH, Cylinder, Axis, ADD & PD. (some people don’t have cylinder, axis or add, then only need provide SPH and PD).
Right (OD): Sphere______ Cyl______ Axis______
Left (OS): Sphere______ Cyl______ Axis______
3. What’s PD or How can i measure my PD (Pupil Distance) ?
Women standard PD is 62 mm, Men standard PD is 64 mm, please measure as picture. Try 3 times and see the average value.
4. How much shall i pay for the Glasses?
Frame + Lenses = Total Cost, Lenses cutting and assembling is free charge. Lenses cost will be depend on the prescription. All the lenses price is for 1 pair (2 pieces)
5. How can i select Lenses as per my Prescription?
Please provide your prescription, we will give you best advice according with your Frame and Prescription.
6. Can i buy Lenses separately?
Yes, you can.
7. When you will ship the ready Glasses?
We will ship it within about 3-4 days for normal prescription glasses.
For the special prescription lenses ( for exmaple: High Cylinder, Progressive Lenses, Progressive Photochromic , High Index Photochromic Lenses....) it takes about 4 - 10 working days.
8. Quality Guarantee.
We will test every glasses prescription before shipment to make sure every glasses is correct.
When you feel the prescription is wrong, then please contact with us, we will check the data at our side ( we will keep 3 years for every glasses prescription ).
when we confirmed prescription have no problem at our side, then please check the prescription at your side, and test the glasses in your optical shop.
we will refund you if we made wrong lenses, or you return the glasses by post, we will make new glasses for you , and we will pay the shipping cost.
Some people don’t feel well if they didn’t use progressive lenses before, it takes about 7 days to be used of it.
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