Future VR headsets could use a new type of lens inspired by holographic devices. The bilayer bifocal lens relies on external ...

These bifocal reader sunglasses are a great choice for shoppers everywhere. The built-in non-slip rubber nose and earpieces are designed for better grip and comfort, ensuring that the glasses won’t ...

Researchers have developed a new type of bifocal lens that offers a simple way to achieve two foci (or spots) with ...