Journal

Dark on top, light at the bottom — gradient lenses shade the sky while keeping close objects readable. Built for driving and desk-to-street days.

Mostly no — standard photochromic lenses need UV light to darken, and your windshield blocks it. What works behind glass instead.

Yes. Dark tint opens your pupils; without a UV filter, more UV floods in than with bare eyes. The one sunglasses mistake that actively harms.

Brown or copper category 3 lenses win for most driving — they boost contrast where it matters. Grey for color purists, yellow only for dusk.

They can — UV400 coating costs cents to apply. The real risk is unverified claims. How to tell a safe cheap pair from a dangerous one.

UV400 means the lens blocks all light up to 400 nanometers — 100% of UVA and UVB. It is the one label that matters on any pair of sunglasses.

Your screen emits polarized light; your lenses block one orientation of it. Cross the two at 90 degrees and the display goes black. Here is the phy...

For daytime driving, yes — polarized lenses cut road glare and eye fatigue. Here is when they pay off and the two cases where they do not.

UV protection guards your eyes; polarization cuts glare. They are separate features — here is how to tell what your lenses actually have.

Everything that matters in a sunglasses lens — UV protection, polarization, tint colors, and lens categories — explained in plain language, with li...