The tasks a Lens Grinder is expected to perform include:
Operating grinding machine to grind surfaces of lens blanks to required curvature and thickness
Selecting metal grinding disc with required dioptric curve and clamping it on the spindle of the machine
Placing metal block with mounted lens blank in position against grinding disc
Starting machine and applying various grades of abrasives or emery paste to disc periodically during grinding process for surfacing the lens blank
Using different curvature metallic discs for surfacing both sides of the lens blank in case of cylindrical or spherical lenses
Removing block from machine and examining blanks for defects