a primary eyeglass frame having a lens frame for holding a first set of lenses therein and including two first side portions each having a first temporal extension for connecting to a temporal member, each said first side portion carrying a first magnetic member; and

an auxiliary eyeglass frame having a lens frame for holding a second set of lenses therein and two second side portions each having a second temporal extension carrying a second magnetic member;

wherein said first magnetic members carried by respective first side portions magnetically engage respective second magnetic members carried by respective second temporal extensions in overlying relation, thereby securing said auxiliary eyeglass frame to said primary eyeglass frame with said second set of lenses aligned with said first set of lenses, and wherein at least a portion of said temporal members is comprised of a flexible shape memory alloy.