Infrared contact lenses using nanoparticles convert near-infrared (800–1600 nm) into visible light, enabling users to perceive infrared wavelengths without external power.

Researchers have made the first contact lenses to convey infrared vision — and the devices work even when people have their eyes closed. The team behind the invention, led by scientists at the ...

The FDA elevated a recall of intraocular lenses currently being wrapped up by Bausch + Lomb, following increased reports of inflammatory reactions from patients who underwent cataract surgery.

Contact lenses have transformed the way we see the world, offering greater comfort and freedom compared to traditional eyeglasses. However, with their convenience comes the crucial responsibility ...

As a contact lens-wearer for nearly two decades, I’ve learned that ordering contacts online is both cheaper and more convenient than buying them at the optometrist’s office. Having purchased ...

This peculiar property is illustrated in the numerical simulation shown in Fig. 5a, which shows the focusing property of a concave lens made of a homogeneous ɛ=μ=0 medium.

At each iteration of the algorithm the concave part is linearized, leading to a convex subproblem. Applications to various output feedback controller synthesis problems are presented. In these ...

As you start to shop for lenses, you'll come across the terms "prime" and "zoom." But as with most gear decisions, understanding what those are, what their impact is and what you should choose isn't ...

PBP lens is activated as a convex lens or a concave lens according to the polarization state of the input light wave. By using this characteristic, a thin AR eyepiece with a large numerical aperture ...

Scientists unveil contact lenses that let users see in the dark. Credit: איתן טל / CC BY 3.0 Scientists in China have created a new type of contact lenses that allow wearers to see in the dark by ...

Here's ePHOTOzine's guide to photographing historical buildings which include advice on what equipment to take, when to visit and how to get the perfect shot.