# Ophthalmic Laboratory Technicians > Cut, grind, and polish eyeglasses, contact lenses, or other precision optical elements. Assemble and mount lenses into frames or process other optical elements. Includes precision lens polishers or grinders, centerer-edgers, and lens mounters. - Code: 51-9083.00 (O*NET-SOC; SOC 2018 51-9083) - Family: [Production](https://foundation.org.ai/occupations#family-51), one of its 114 occupations - Tasks: 18 tasks (14 core and 4 supplemental) - Page: https://foundation.org.ai/occupations/51-9083.00 - JSON: https://foundation.org.ai/data/tasks/51-9083.00.json ## What the work is made of 1. Mount and secure lens blanks or optical lenses in holding tools or chucks of cutting, polishing, grinding, or coating machines. Core task · Task 10529 · Rated by 90 people who do the job, July 2015 2. Inspect lens blanks to detect flaws, verify smoothness of surface, and ensure thickness of coating on lenses. Core task · Task 10532 · Rated by 91 people who do the job, July 2015 3. Set up machines to polish, bevel, edge, or grind lenses, flats, blanks, or other precision optical elements. Core task · Task 10537 · Rated by 89 people who do the job, July 2015 4. Inspect, weigh, and measure mounted or unmounted lenses after completion to verify alignment and conformance to specifications, using precision instruments. Core task · Task 10540 · Rated by 88 people who do the job, July 2015 5. Shape lenses appropriately so that they can be inserted into frames. Core task · Task 10530 · Rated by 92 people who do the job, July 2015 6. Clean finished lenses and eyeglasses, using cloths and solvents. Core task · Task 10533 · Rated by 92 people who do the job, July 2015 7. Mount, secure, and align finished lenses in frames or optical assemblies, using precision hand tools. Core task · Task 10528 · Rated by 91 people who do the job, July 2015 8. Examine prescriptions, work orders, or broken or used eyeglasses to determine specifications for lenses, contact lenses, or other optical elements. Core task · Task 10535 · Rated by 90 people who do the job, July 2015 9. Adjust lenses and frames to correct alignment. Core task · Task 10527 · Rated by 91 people who do the job, July 2015 10. Select lens blanks, molds, tools, and polishing or grinding wheels, according to production specifications. Core task · Task 10534 · Rated by 89 people who do the job, July 2015 11. Position and adjust cutting tools to specified curvature, dimensions, and depth of cut. Core task · Task 10539 · Rated by 88 people who do the job, July 2015 12. Assemble eyeglass frames and attach shields, nose pads, and temple pieces, using pliers, screwdrivers, and drills. Core task · Task 10531 · Rated by 91 people who do the job, July 2015 13. Set dials and start machines to polish lenses or hold lenses against rotating wheels to polish them manually. Core task · Task 10536 · Rated by 90 people who do the job, July 2015 14. Repair broken parts, using precision hand tools and soldering irons. Core task · Task 10538 · Rated by 88 people who do the job, July 2015 15. Immerse eyeglass frames in solutions to harden, soften, or dye frames. Supplemental task · Task 10543 · Rated by 87 people who do the job, July 2015 16. Lay out lenses and trace lens outlines on glass, using templates. Supplemental task · Task 10542 · Rated by 88 people who do the job, July 2015 17. Control equipment that coats lenses to alter their reflective qualities. Supplemental task · Task 10544 · Rated by 87 people who do the job, July 2015 18. Remove lenses from molds and separate lenses in containers for further processing or storage. 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