http://www.laramyk.com/your-edge-independence/
The Dangers of Night Driving Glasses
[W]hen 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.
"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.
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 aligned
Responsible 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.
There is no magic bullet. A pair of $19.99 glasses will not fix,
and may indeed increase, your night vision problems.
You may talk yourself into thinking they work
so you can avoid the time, trouble, and expense
of seeing an optometrist, and that's dangerous.
If something sounds too good to be true....