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Message: <blockquote data-quote="London Mahathun" data-source="post: 20311594" data-attributes="member: 542448">It is an all too common misconception that yellow tinted or yellow  polarized night driving glasses are beneficial for night time driving.  The thought is, the yellow or amber color reduces glare and improves  contrast. However, in reality, when driving at night or dusk in already  limited lighting conditions, ANY tint further reduces the amount of  light transmitted to the eye, and consequently, further impairs vision.  The problem is compounded as the yellow tint gives the wearer the  impression they are seeing better, when in fact the reverse is actually  true. "Yellow 'Night Driving' lenses have been shown to provide  no benefit in seeing ability at night. They are even hazardous, because  they give the driver a feeling of seeing better, which no one has yet  been able to explain. Studies have shown that they actually impair  visual performance and retard glare recovery. Many promoters have made  unfounded claims for the ability of amber to improve night vision. They  have employed mass solicitation, usually by mail. The Federal Trade  Commission has correctly ruled that such practices are illegal since the  lenses do not perform as claimed." - Forensic Aspects of Vision and Highway Safety", Merrill J. Allen, O.D., Ph.D., Et al. While yellow lenses can be effective for foggy or hazy daylight  conditions, they are not effective against headlight glare and should  not be worn at dusk or night. If glare from headlights is a problem, the  first step should be a thorough eye examination, as this could be an  early indication of cataracts or other medical conditions."So-called night driving glasses are generally amber  tinted eyewear meant to reduce the glare of oncoming headlights. While  they may make the driver feel more comfortable, they also reduce the  wearers visibility of the darker portions of the roadway." - Sunglass Association of America The best option for night time driving is a pair of spectacles with  clear lenses and an AR coating. The AR coating is beneficial in two  ways. First, it minimizes internal reflections within the lenses,  reducing halo problems, and second, it increases the transmittance of  light through the lens to the eye. However, it is important to note, if a  patient does not normally wear spectacles, AR coated lenses, or any  other type of night driving glasses will not improve night vision, as AR  coatings only minimize aberrations that are inherent in ophthalmic  lenses and night driving glasses will simply serve to introduce those  abberations to the wearer's vision.Tips for optimal night time driving vision:- Make sure eyes are examined regularly- Always wear an up-to-date prescription- Lenses worn should be clear with an AR coating- Ensure lenses are clean- Ensure windshield is clean- Ensure headlights are clean and properly alignedResponsible dispensers of ophthalmic lenses should discourage the use  of tinted, polarized, or photochromic lenses in night time or dusk  driving conditions and not participate in solicitation or marketing of  so-called night driving glasses by irresponsible manufacturers.source :<a href="http://www.laramyk.com/resources/education/dispensing/the-dangers-of-night-driving-glasses/" target="_blank">http://www.laramyk.com/resources/education/dispensing/the-dangers-of-night-driving-glasses/</a></blockquote>

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