Polarized Lenses VS. UV Protection

There is already a Guide to Buying Sunglasses that mentions polarized lenses for specialized situations such as at being on the snow or water. Dr. Newcomb's comparison of "Polarized lenses vs. UV Protection", advises to wear both at the same time, quote, "100% UV protection clip-ons that fits over your Polaroid lenses." U.S. federal law requires that all sunglasses must have 100 percent UV protection. Since most clip-ons are Polaroid, it would be easier to go with the more common combination.

Is there a way for total eye protection without looking like a dork with two pair of sunglasses on at the same time? Having the clip-ons flipped up during the times when the sun is behind a passing cloud would look geeky.

Do transition lenses have UV protection? Sun sensitive lenses work on the theory of photochromism. Excited by the sunshine, the treated lens becomes darker as the UV rays of the sun become stronger. Limited stimulation can result in inadequate protection from UV radiation.

There are sunglasses with both 100% UV protection and polarized. If not planning to spend $130 on sunglasses because of the habit of losing them or ruining them with scratches then here is a hint, do not use bathroom tissue to clean your glasses nor your old cotton T-shirt. Microfiber cloth is good if used solely for cleaning eyeglasses.

Polarized UV protected sunglasses start at $76 if sorted by relevance on Google. If sort by price the top hit is a $15 "Polarized UV Protection. Meets ANSI Z80.3 special purpose UV requirements". It's made in China.

Mountaineering glasses are two round polarized lenses for each eye that rotate for adjusting. Cross-polarization using two polarized lenses may not be the answer. Modern polarized 3D glasses used in 21st century 3D movies have linear polarized film mounted at opposing 45-degree angles for each lens.

With polarized glasses, one is able to see colorful stress faults in auto glass. When wearing polarized sunglasses, able to see the changing effects by looking into the sky and turning your head 35º and see the alternating shadows. Rainbows are one example of natural polarization. There are always two rainbows; it is just very rare to be in the 'sweet spot' to see both of them. Ask yourself, why is the red band always facing the inside towards the center of the double arch? The primary inner arch will always have red on it's topside.

The human eye lens acts as a filter of ultraviolet (UV) light, after cataract surgery, lens implants should be able capable of absorbing the entire UV spectrum. Halogen lamps emit significant amounts of UVB. UVA tanning fluorescent lamps are safer than black lights.