Is photochromic lenses good for the eyes
1, graylenses
Absorbs IR and 98 percent UV. The great advantage of the gray lens is that the original color of the scene will not be changed by the lens, and the great satisfaction is that it can reduce the light intensity very effectively. The gray lens can evenly absorb any color spectrum, so the viewing scene will only darken, but there will be no obvious chromatic aberration, showing a true natural feeling. It is a neutral color, suitable for all people.
2. Brown lenses
Can absorb 100 percent of ultraviolet rays, and the brown lenses can filter out a lot of blue light, which can improve visual contrast and clarity, so Popular with wearers. Especially in the case of serious air pollution or fog, the wearing effect is better. Generally, it can block the reflected light of the smooth and bright surface, and the wearer can still see the fine part, which is the ideal choice for the driver. For middle-aged and elderly patients with high vision above 600 degrees, priority can be given.
3. Green lens
The green lens is the same as the gray lens, which can effectively absorb infrared light and 99 percent of ultraviolet light. While absorbing light, it maximizes the green light reaching the eyes, so it has a cool and comfortable feeling, suitable for people who are prone to eye fatigue.
4, Pink Lenses
This is a very common color. It absorbs 95 percent of UV rays. If it is used as glasses for vision correction, women who must wear them often choose light red lenses, because the light red lenses have better absorption of ultraviolet rays and can reduce the overall light intensity, so the wearer will feel more comfortable.
5. Yellow lenses
Absorbs 100 percent of UV rays, and allows infrared and 83 percent of visible light to pass through the lenses. The big feature of yellow lenses is that they absorb most of the blue light. Because when the sun shines through the atmosphere, it is mainly expressed in blue light. After the yellow lens absorbs blue light, it can make the natural scenery clearer. Therefore, the yellow lens is often used as a ‘filter’ or used by hunters when hunting.
Who is not suitable for color changing lenses
1. Glaucoma patients
It is not suitable to work in the dark Or reading for too long. Although the color-changing sunglasses are very light in indoor natural light, they still have a great impact on their vision. Therefore, glaucoma, especially those suffering from narrow-angle glaucoma, is best not to use color-changing glasses.
2. People with high myopia and hyperopia
It is better to choose white lenses when choosing lenses. Because the diopter is too high, the color of the color changing lens is inconsistent, which will affect the clarity of vision. Therefore, people with high myopia or hyperopia should not wear color changing lenses.
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