Abstract: Clip-on auxiliary glasses are custom fit to a user's regular eyeglasses by selecting heat-softenable rim blanks having circumferences corresponding to the circumferences of auxiliary lenses, softening them and securing the auxiliary lenses in them. A pair of spaced clips is secured in the periphery of each rim, and a spring bridge strap is cut to length and secured to each rim to produce a unit which matches the configuration of the eyeglasses with which the auxiliary glasses are to be used.