When choosing a new pair of glasses, most people focus on the frame: the shape, size, color, material, and how it looks on the face. But there is another measurement that plays an important role in how well your glasses work: interpupillary distance, commonly known as...

You leave the optician with a new eyeglass prescription in your hand. Then you look at it. SPH. CYL. AXIS. ADD. PD.Plus signs. Minus signs. Numbers like -2.00, +1.25, and 175. For something designed to help you see more clearly, an eyeglass prescription can look...

Some glasses help you see better. Some complete an outfit. And then there are those rare frames that become something else entirely — objects worth collecting. To a collector, eyewear is more than acetate, metal, hinges, and lenses. A remarkable frame can represent an...