In the second and final part in our look at the life of a lens from blank to final appliance, Andy Hepworth looks at coating, glazing and final checking. Module C8730, one general point for optometrists and dispensing opticians
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At this stage we already have the required diameter and curvature of the lens so there is no further use for the aluminium block (or the metal alloy holding this block onto the lens). There are several ways in which the block can be removed, the most common methods include the following:
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