Night driving glasses

[busterb]

We'll no glasses at walmart, fred's and 2 welding supplies. Next check is a truck stop. Damn I hate to go to eye Dr. and pay big bucks for something that may not work.

[Spexxvet]

Originally Posted by footfootfoot

I thought it was to keep the bugs away. hahaha

I understand the point of yellow and amber lenses is to filter out the portions of the blue spectrum which doesn't do it for us humans (spexx, weigh in here?) and they are mostly effective at twilight or on overcast days.

I'm thinking overcast days must have more blue light (higher color temp. I'll look that up) and by filtering it out things seems brighter because we see blue light as darker?

maybe?

They increase the contrast and that alone takes strain off the eyes. In B&W photography those color lenses help to render the sky a darker shade of gray since B&W film is somewhat more blue sensitive than our eyes.

Yes. I'll just add that the blue light that reduces visual acuity is from scattering. Scattering happens when nice crisp rays of light hit gas, like the atmosphere, which causes them to wiggle, and move into the blue wavelength range. Yellow counteracts the blue, and polarization eliminates almost all of the wiggles that are not in the vertical plane. Glare is light waves not in the vertical plane.

Originally Posted by BigV

Leaving the discussion of color aside, polarized lenses really can make dramatic improvement by reducing the glare from the wet roads.

The only negative about polarized lenses is they can cause problems viewing some electronics.

Originally Posted by busterb

We'll no glasses at walmart, fred's and 2 welding supplies. Next check is a truck stop. Damn I hate to go to eye Dr. and pay big bucks for something that may not work.

Walgreens has a "as seen on TV" area. I think I've sen them there.

[Spexxvet]

BTW, it's not what we're discussing here, but High Energy Visible light (HEV) is the new UV. Studies have shown that HEV light from screens can do all kinds of harm to people.

http://www.bluelightexposed.com/#what-is-bue-light