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During the day, driving glasses with the light transmittance should be not less than 10%, the evening light transmittance must be greater than 80%. Driver eyeglasses worn during day and night have different requirements. There are now many driver glasses in the market which are suitable for daytime.
The most importance that be considered when buying driver glasses is whether they are anti-UV, this is the first choice should be noted. A pair of sunglasses should be able to pass through the UV-blocking, but different colors of traffic signals should have a strong resolution. The second important role of mirror is light glare. The glare of light now, there are two ways: one is by color. Dark Color can be a considerable degree of filtering light, which has played the role of light glare, or by using a polarized lens, color and material selection have relation with it.
Also, in order to a certain extent driving mirror filter in the short-wave light. Light is a wavelength of 400 nm to 700 nm light, which can injure our eyes. Short-wave light is interfering vision, for example, blue, violet. The regular optical company should tell you that eyeglasses on the number of short-wavelength light filter, for example, by dozens of blue, here by the dozens. In contrast, red light, green light on the eyes light interference. Before buying eyeglasses, please see the product descriptions, and ask the salesmen about the details.
Driving mirror has lots of kinds colors, from the protective effects of view, mainly grey, brown, yellow, G-15 (or dark green) of these are better, which can enhance the contrast of yellow (in medicine, yellow color can enhance visual acuity). And red glasses are not suitable for wearing on when driving the car, because it will affect the recognition of traffic signs, which can cause traffic accidents.
The owners who have some relatively large difference between the visions usually do not like wear eyeglasses. And often don’t use eyeglasses. This is a mistake to think, because if this continues, the growing difference between the sense to get worse when see objects, especially in the car when visual distance mistake will easily lead to inaccurate traffic. Now, the prescription driving eyeglass is a popular product for driver day by day.
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