While wave upon wave of smartglasses and face-based wearables crash on the shores of CES, traditional glasses really haven’t changed much over the hundreds of years we’ve been using them. The last ...

Monofocal and multifocal lenses are both types of artificial intraocular lens (IOL). A monofocal lens has one focusing distance, whereas a multifocal lens can focus on close and far distances at the ...