photochromic lenses

Glasses have been an essential part of human life for centuries, aiding in vision correction and protection against the sun's harmful rays. Let's take a look at the fascinating history of eyewear and how it has evolved over time. Early History The earliest form of eyewear consisted of a pair of magnifying lenses held together by a frame. These glasses, called "rivet spectacles," were first invented in Italy in the late 1200s. They were made of glass, and the frames were often made of bone, metal, or leather.