How to choose sunglasses lens

 Buy Lenses For Glasses should not have the "degree" of optical Transition Mirror Lenses. Generally, if the diopter exceeds 15%, there will be a feeling of dizziness when wearing. Transition Lenses Colors must have high strength and pass impact test. Generally speaking, the strength of plastic sheets (propionic acid or cellulose acetate), resin sheets, glass sheets from small to large.

In the face of dozens of brands, thousands of styles of sunglasses, how to choose suitable for their own sunglasses? Regular cyclists had better wear resin sunglasses; Sports wear frame radian larger sports sunglasses or add a belt, chain; People who are nearsighted or far-sighted can wear sunglasses clips or special optical sunglasses. In spring and autumn, choose sunglasses with shallow Transition Lens Sunglasses and stable frame color; Winter choose frame color to some gorgeous, snow days to wear color film motion sunglasses, winter choose frame slightly larger sunglasses so as to windbreak.

What condition is suitable for lens film

 Such Buy Lenses For Glasses, from the optical point of view, reduce the transmittance of light, and the person after light irradiation, there will be strong reflective, especially the driver is not suitable for this Eyeglass Lenses Online. Driving at night will have obvious blue ghost or blue transverse lamp tube reflection. As for the red film, it is to improve the reflection of the red part, that is, in the 700~780 nanometer part, improve the amount of reflection, also affect the transmittance, but a little better than the blue film, because we are not very sensitive to the red part Pair Of Glasses. Gold film, is to improve the amount of red and yellow reflection, also affect the transmittance. Does not adhere to the principle of optical use Cute Perscription Glasses, just a decorative effect. So the best film, should have the maximum transmittance, very weak reflection, the lower the color the better.

Does change color glasses have harm to the eye

 Discoloration glasses are not harmful to the eyes, mainly depends on the color change, because discoloration glasses in the face of ultraviolet or strong light, will become gray Buy Lenses For Glasses, green lenses, yellow lenses, light blue lenses and brown Transition Lens Sunglasses, different color lenses of light absorption or transformation is different.

For instance to gray Transition Lenses Colors, it can absorb the ultraviolet light such as 98% above, won't appear the color deviation on vision, belong to a kind of neutral color, suit all use, do not harm to glasses commonly, unless the quality of this Progressive Lenses Online has a problem.

The main features of sunglasses lenses

 Gray, for any chromatographic equilibrium absorption, without clear off color, show your natural feeling, can be fully absorbed infrared, and 98% of ultraviolet light Dark brown Buy Lenses For Glasses, including nearly 100% of the ultraviolet and infrared, filter out a lot of blue light, which can improve visual contrast and clarity green Eyeglass Lenses Online, can absorb all infrared and 99% uv, A cool comfort, with blue grey lens suitable for eye fatigue, and gray lenses are similar, both belong to the neutral lenses, but darker, visible light absorption rate higher mercury Glasses Lens Index, high density of mirror coating can be more visible light absorption and reflection, to any chromatographic balanced absorption, without clear off color, suitable for outdoor sports people use.

Yellow lens can absorb 100% ultraviolet light and most blue light, in foggy and dusk can improve the contrast, provide more accurate vision, so it is also called night vision Gradient Tint Prescription Lenses. Light blue, light pink is adornment sex is more than practical lens likewise.