Ophthalmic Optics Lab 1 Spectacle Frames I Practice Test

Grouping eyewear by what they’re made from uses broad categories, and the umbrella term for all metals used in frames is metal frames. This category includes the various metals and alloys like titanium, stainless steel, aluminum, and Monel, which all share being metal but differ in specific properties. Eyewire is just a component that surrounds the lenses, not a material category. Plastic frames are a separate material class, and combination frames mix materials (including plastics with metal). So the broad classification that covers many different metallic frame materials is metal frames.