75mm 1.499 CR39 Polarized Sunglasses Lens Blanks Semi Finsiehd Optical Lens

What are the benefits of polarized lenses?

Let’s start with the basics.

While all tinted lenses reduce brightness, polarized lenses are particularly useful for limiting glare. Glare is what happens when the sun hits a flat surface and reflects the light back into your eye at a greater magnitude. It also has some harmful impacts on your immediate vision — from reduced depth and color perception, all the way to temporary blindness. You’re most likely to encounter glare on a bright day on the ski slopes, as water and snow are particularly reflective.

Regular sunglasses mean that while your eyes are shaded from overall light, they aren’t protected from this direct reflective glare. Polarized sunglasses specifically filter much of this glare, giving you clearer vision with less eye strain.

How do polarized lenses reduce glare?

Polarized sunglasses lenses contain a chemical filter that absorbs horizontal light waves (reflections), while allowing the vertical waves to pass through (direct light). By removing the horizontal reflected light, the polarized chemical filter eliminates any glare but preserves color, depth, and clarity.

When should I wear polarized sunglasses?

You can wear polarized lenses at any time, but they’re particularly useful while on sand, surf, and snow — from the lake to the slopes, water makes the likelihood of glare all the greater. And you’re much more likely to miss out on great views. Polarized eyewear is also well-loved in the outdoor sports world, allowing athletes like cyclists, runners, rowers, golfers, and more to see their path with added clarity and protection.

When should I not wear polarized lenses?

We assume most people aren’t wearing their sunglasses inside, but it should be noted that polarized lenses often black out or severely reduce the visibility of LCD screens — which includes your smartphone, tablet, laptop, and most other electronic screen-based devices. That said, it’s easy enough to quickly take off your glasses, answer a text, check your email, and then put your sunnies back in place without needing to miss out on the added protection of polarization.