A modular reader assembly, with a wire frame construction is provided. A pair of eyeglass lenses are releasably engageable with the frame assembly by use of a spring-biased wire frame material. Each of the lenses are secured in place by at least three contact points at notches positioned at the inner,...http://www.google.co.uk/patents/US5997137?utm_source=gb-gplus-sharePatent US5997137 - Modular eyewear assembly
