City Optix has set off a fashion frisson in San Francisco for years. With two locations- one on Haight Street and one on Chestnut Street- the store offers both optometry services and up-to-the-minute styles. It's the perfect place to go and trick yourself out in an unparalleled collection of modern and conservative eyewear. Prescription eyeglasses and shades are carried by the likes of Dita, Wink, Oakley, and LA Eyewear. If you're struck by a fancy for blue cat's eye frames or American optical aviators, this is your best bet. My personal favorite discovery is Rodenstock's yummy titanium/plastic frame ($115) with Japanese temples and a skull bridge in goldtone matte/blonde.