Vintage retro glasses can be found on websites such as Vintageous, Fifties Frames and Eyeglass Boy, as well as Etsy. When shopping for frames on line, it's vital to take precise measurements of the width between hinges, temple length and lens width to estimate whether a given pair might fit.
Vintage plastic frames can become brittle and start to crack over time; when this occurs, it's not possible to put prescription lenses in them. If discoloration is present in a pair of plastic frames, it may be about to crack. A trustworthy optician can advise as to whether a frame is strong enough for prescription lenses. Choosing a vintage glasses style should involve consideration of how often the glasses are to be worn.