Lens grinders and polishers frequently:

• Use their hands to handle, control, or feel objects, tools, or controls.
• Repeat the same movements.
• Stand for long periods of time.
• Walk or run for long periods of time.

It is important for lens grinders and polishers to be able to:

• See details of objects that are less than a few feet away.
• Hold the arm and hand in one position or hold the hand steady while moving the arm.
• Use fingers to grasp, move, or assemble very small objects.
• Make quick, precise adjustments to machine controls.
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• Use one or two hands to grasp, move, or assemble objects.
• Adjust body movements or equipment controls to keep pace with speed changes of moving objects.
• React quickly using hands, fingers, or feet.
• Make fast, repeated movements of fingers, hands, and wrists.
• Understand the speech of another person.
• See differences between colors, shades, and brightness.

It is not as important, but still necessary, for lens grinders and polishers to be able to:

• Determine the distance between objects.
• Speak clearly so listeners can understand.
• See details of objects that are more than a few feet away.
• Move two or more limbs together (for example, two arms, two legs, or one leg and one arm) while remaining in place.
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• Use stomach and lower back muscles to support the body for long periods without getting tired.
• Focus on one source of sound and ignore others.
• Hear sounds and recognize the difference between them.
• Be physically active for long periods without getting tired or out of breath.
• Bend, stretch, twist, or reach out.
• Use muscles to lift, push, pull, or carry heavy objects.