Ever wondered how your glasses are made?
Tuesday, August 26th, 2008 by Ran (read all posts by Ran)We find the process of how prescription glasses are made fascinating and we think you may too after you read this article. The process of how prescription glasses are made is quite complex, though at Glasses Direct the prices are still lower than the price on the high street as you can see in our comparison table.
The more complex glasses prescriptions go through the following stages, although simpler prescriptions may skip some of the earlier stages:
Stage 1 – The laboratory select the lenses from a number of basic variants. These are pre-formed plastic blocks.

Stage 2 – The lenses are ‘blocked’ and semi-finished so they can be held in the generator – the machine that grinds the lens to shape.

Stage 3 – Your individual lenses are created from a template.

Stage 4 – They’re ‘generated’ – a process which grinds away much of the material of the lens, so that it is the right prescription and shape.

Stage 5 – Next they are polished so they become optically blemish-free.

Stage 6 – The lenses are then edged and marked up – which means their matched with their frame, and verified as being the right prescription.
Stage 7 – Lenses are cut to the right shape.
Stage 8 – Hand-edging removes any sharp edges and ensures a perfect fit with your glasses frame.
Stage 9 – Tints and coatings are added by dipping the lenses in dye or coating chemicals that bond to the lens surface
Stage 10 – The glasses are checked against your prescription for accuracy.

Further checking at Glasses Direct
When the glasses return from the laboratory, they go through a further set of stringent checks by our own quality assurance team who verify they’re the right frames with the correct prescription. We think this final stage is so important that we introduce you to the person who checked your glasses by including a card with your order showing the checks they completed. Once he or she is happy, your glasses are placed in their case with a cleaning cloth, plus any other items in your order, and dispatched via next day delivery. We use a courier so that we can trace the glasses right to your door.
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