What material of sun lens is good to the eye
The good materials for the eyes include polarizing lens, polycarbonate lens, nylon lens, color-changing lens, resin lens, etc., which should be selected according to your own situation and under the guidance of a professional doctor.
1, polarizing film: is a special optical film device, only allow along a specific direction of light through, mainly by polarizing layer, triacetate fiber film, adhesive, release film, protective film and reflection film, in line with the UV standard, can reduce UV damage to the eyes.
2, polycarbonate lens: the main material is polycarbonate, the lens has strong impact resistance, thinner and lighter lens, and the UV protection ability is more lasting and stable, which can ensure that the eyes and the surrounding skin can be protected.
3. Nylon lenses: mainly composed of transparent polyamide materials, nylon lenses have high elasticity and professional protection function, which has a certain protective effect on the eyes. Sunglasses with nylon lenses are used by sports people and professional protection people.
4, color changing lens: the chameleon added a certain UV absorbent and color changing dye, can absorb and block UV, at the same time UV irradiation will also appear color change, its UV protection function is better.
5, resin lens: the material is resin, its high refractive index, thin lens, more comfortable to use, impact resistance and light transmission performance is good, but also effective UV protection, can better protect the eyes.
In addition to the above lenses, sunglasses made of acrylic, plastic and glass lenses are also better for your eyes. If sunglasses need to be used, it is recommended to go to the optometry department of the hospital. After fundus examination, slit lamp and other relevant examinations, the appropriate sunglasses should be selected under the guidance of the doctor.
