Blue-Light Glasses: What the Evidence Actually Supports
The American Academy of Ophthalmology finds no evidence that screen blue light damages eyes. What blue-light lenses actually do, and what eases eye strain.
Sep 23, 2026 · Updated Sep 23, 2026
Section
Eyewear
Sunglasses and blue-light lenses — what UV400 and lens coatings actually guarantee, checked against standards.
What UV400 Actually Guarantees on a Sunglasses Label
UV400, polarized, category 3 — the three numbers on a sunglasses label do very different jobs. What each one means, which one protects your eyes, and the cheap test that catches fake claims.
Sep 19, 2026 · Updated Sep 19, 2026
Acetate or Metal: Choosing Eyeglass Frame Material by Facts
Acetate, injection-molded plastic, titanium, monel and stainless steel differ in weight, hinges, corrosion resistance and nickel exposure. What each is.
Sep 20, 2026 · Updated Sep 20, 2026
Reading Glasses Strength: A Starting-Point Chart by Age
Presbyopia arrives in the early forties. A starting chart for reader strength by age, a do-it-yourself test, and the signs that call for a real exam.
Sep 11, 2026 · Updated Sep 11, 2026