Is Photochromic Lenses Good to Our Eye?
1. Gray lenses
Absorbs infrared rays and 98% ultraviolet rays.The advantage of a large gray lens is that it does not change the original color of the scene due to the lens, but the great satisfaction is that it can reduce the light intensity very effectively.
2. Tea lenses
Able to absorb 100 percent of ultraviolet light, tawny lenses filter out a lot of blue light and improve visual contrast and clarity, making them popular with wearers.Especially in the case of heavy air pollution or fog wear effect is better.
3. Green lenses
It absorbs infrared light and 99 percent of ULTRAVIOLET light as efficiently as gray lenses.In absorbing light at the same time, greatly increase the green light to reach the eye, so there is a cool and comfortable feeling, suitable for the eyes easily tired people use.
4. Yellow lenses
It absorbs 100% of uv rays and allows infrared and 83% of visible light to penetrate the lens.Yellow lenses are distinctive in that they absorb most of the blue light.Because when the sun shines through the atmosphere, it mainly shines in blue light.When yellow lenses absorb blue light, they can make things clearer in nature.
Chameleons are not for people
1. Glaucoma patients
Should not work in the dark or read the time is too long, although change color sunglasses to fall in indoor natural light color is very shallow, but still have very big influence to its vision, glaucoma suffers from narrow Angle glaucoma especially so, had better not choose change color lens.
2. People with high myopia or farsightedness
When choosing lens, good choice light white piece.Because the diopter is too high, the color of the chameleon is not consistent, which will affect the clarity of vision, so people with high myopia or high farsightedness should not wear a chameleon.
