Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging ...

These specialized glasses, available in the U.S. for the first time, aim to reduce the progression of myopia in kids aged 6 to 12.

About 45 million Americans wear contact lenses, making this an important vision-correcting tool. But whether your doctor recently recommended that you try contacts or you’ve been popping them in for ...

It’s June 30, 4:12 p.m. CST. We call Loners Club via Zoom. “Can you hear me? Can you see me?” she says. “Perfect. So, what were you saying?” I answer. “Man, to be honest, I think I forgot,” she says. ...

Single-vision contact lenses with opaque, nonrefractive features offer strong visual performance compared with a dual-focus option. Contact lenses with opaque, nonrefractive features may be effective ...

A study participant puts in a contact lens. Researchers developed lenses with nanoparticles that convert infrared wavelengths into visible light that humans can perceive. Yuqian Ma, Yunuo Chen, Hang ...

It certainly sounds like something from a new sci-fi series, but a power-free set of contact lenses impregnated with nanoparticles has proven successful in allowing humans to see what has previously ...

New lenses turn invisible infrared light into visible images, a study found. Humans can now see in the dark -- and even with their eyes closed -- using nanotechnology contact lenses that turn ...

Neuroscientists and materials scientists have created contact lenses that enable infrared vision in both humans and mice by converting infrared light into visible light. Unlike infrared night vision ...

Contact lenses have enabled people to see beyond the visible light range, picking up flickers of infrared light even in the dark – or with their eyes closed. The lenses contain engineered ...