•Analyze and interpret customers' written optical prescription (from the examining doctor) to determine the lens specifications required.•Measure customers' facial features.•Assist customers in selecting the style and color of eyeglass frames and lenses by advising them of the size and shape best suited to both their facial features and to their optical prescription.•Prepare a work order that gives optical laboratories the information needed to fabricate lenses and to mount lenses in frames.•Verify the exactness of finished lenses by checking the power and surface quality with special optical instruments.•Adjust finished eyeglasses to fit the customer by heating and shaping plastic frames, or by bending metal frames using pliers.•Instruct customers in the use and care of eyeglasses.•Recruit, hire, and train all new employees.•File major insurances such as VSP, Eyemed, and Medicaid.•Perform follow-up services, such as fixing broken frames, replacing temple screws, and adjusting and refitting glasses.•Very familiar with all contact lens and helping new contact lens wearers with care, insertion, and removal techniques.•Cross-trained as a technician using air-puff tonometer, Optomap, and autorefractor.