How it's made: fitting prescription lenses

November 24, 2015

A step-by-step guide to how prescription lenses are fitted

Step One (for reglazing - fitting new lenses into existing frames - only)

If necessary, the frames to be fitted are checked to ensure they are appropriate for re-glazing (e.g. plastic frames are not brittle). The old lenses are then removed.  

 

 

 

Step Two

The shape of the frames is traced in a tracing machine.

 

 

 

 

 

 

Step Three

New prescription lenses come in big round discs, like these ones - the thickness of the disc depends on the strength of the prescription.

 

 

 

 

 

An edging machine is used to grind the discs to the correct lens size and shape for the glasses frames.

 

 

 

 

 

 

Step Four

 

The lenses are fitted into the glasses frames.

 

 

 

 

 

 

 

Step Five 

The new lenses are cleaned and polished and the glasses are ready for delivery.

 

 

 

 

 

 

 

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