There are plenty of budget earbuds on the market, but which pairs are worth it? We tested a range of earbuds to find the best affordable pairs.

Paper-thin optical lenses simple enough to mass produce like microchips could enable a new generation of compact optical devices. Researchers have fabricated and tested flat lenses called Fresnel zone ...

A new report shows the benefit of wearing contact lenses for slowing myopia has a lasting effect -- good news since 50% of the world (5 billion people) will likely be nearsighted by 2050.

Best places to buy contact lenses online that are cheap and high quality - Tired of overpaying for contact lenses? Abha Shah ...