The other has gone back to the thick, squared acetate of the 1970s, letting the eyewear do the heavy lifting in an otherwise ordinary outfit. The Ray-Ban Aviator has survived nearly a century because nobody has improved on the proportions. Cartier offers a frame whose exposed screws refer to a 1904 watch made for an aviator over Paris. Below, the full spread, from the folding heirloom pick you keep for decades to the electrochromic gadget you always forget to charge. Fifteen pairs, each worth the most visible real estate you own.