OHO’s Journal

What UV400 Actually Means (And Why Cheap Sunglasses Without It Can Damage Your Eyes) — Curated Sense Journal
What UV400 Actually Means (And Why Cheap Sunglasses Without It Can Damage Your Eyes)
UV400 is the threshold for full UVA + UVB protection. Sunglasses without it can damage your eyes more than not wearing them at all. Here's the science. Read more...
How Polarization Actually Works (And Why It Matters for Driving and the Beach) — Curated Sense Journal
How Polarization Actually Works (And Why It Matters for Driving and the Beach)
Polarized lenses block horizontal-axis light reflected off flat surfaces — the exact source of glare. Here's the optics, and why a $50 polarized lens outperforms a $400 non-polarized one for... Read more...
The Aviator Sunglasses: A Short History from 1936 Air Force to 2026 Coastal — Curated Sense Journal
The Aviator Sunglasses: A Short History from 1936 Air Force to 2026 Coastal
The teardrop-shaped aviator was invented in 1936 to solve a US Air Force pilot problem. By 2026 it's the most-recognized sunglasses silhouette in the world. Here's how it got from... Read more...