A professional who mounts prescription eyeglass lenses in metal, plastic, or combination frames, using handtools. Responsibilities include:

• Examines eyeglass prescription to determine style, color, and size of frame.
• Inspects lenses to detect flaws, such as pits, chips, and scratches.
• Holds and turns lenses against grinding wheel to remove flaws.
• Assembles eyeglass frame and attaches ornaments, shields, nose pads, and temple pieces, using pliers and screwdrivers.
• Drills holes in lenses for mounting on rimless frames, using diamond drill.
• Immerses plastic frame rims in hot salt solution to soften rims or stretches rims, using hot, metal cone.
• Inserts and aligns lenses in frame.
• Verifies frame dimensions and alignment of lenses, using protractor, ruler, and straightedge.
• Turns lenses in frame to correct alignment, using padded pliers.
• Immerses plastic frames in cold water to set plastic around lenses.
• Tightens screws to hold lenses in metal frames.
• Examines lenses under polarized light to detect stress caused by overtightening screws and adjusts screws as necessary.
• Heats plastic frame bridge and bends frame according to prescription specifications, using fingers and handtools.
• Immerses plastic frames in dye for specified period to color frames.
• Solders broken metal bridges and replaces damaged temples to repair frames, using soldering iron and handtools.
• Cleans and polishes finished eyeglasses, using cloth and solvent.
• May be designated according to type frame mounted as metal-frame inserter; plastic-frame inserter; or according to part assembled as trim mounter ii.