Researchers from Taiwan's Tunghai University compared 3D printed headlight lenses to CNC-machined and reverse-engineered ones ...

They found 15-20% of US users simply flick these fiddly lenses down the drain via the bathroom sink or toilet. The Arizona State University study suggests that much of the plastic material then ...

the lens functions like a regular glass or polycarbonate lens. The researchers would need to test their prototype with people who have photosensitive epilepsy before commercializing their product ...

They're made from BPA-free plastic, which makes for a lightweight yet durable frame. The Caramel Polarized version comes in a subtle semi-translucent light tan with polarized tonal-tinted lenses.