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Nowadays lots of people over the world wear prescription glasses, because more and more people need prescription glasses to correct their vision in order to see well to perform life’s basic function, such as reading words or deciphering symbols. But very few of these people actually know how their prescription eyeglasses are actually put together.
Prescribing prescription eyeglasses actually begins at the point of the eye exam, a person is examined by his doctor or by an optometrist to determine what his prescription is. When the optometrist get detailed numbers of prescription, he or she will know what type of prescription blank is closest to the corrective requirements which can help to see clearly. The prescription blanks are preformed lenses which are flat on one side and curved on the other side. Most of these are commonly made of impact resistant plastic. The thickness of the blank will be made by the corrective needs of the individual patient. These lenses blank is expertly ground determined by technicians until it will provide the corrective properties that are needed by the wearer.
If the proper curvature for the prescription has been reached, then the edges of the lenses will be ground down to fit the frames that were chosen by the patient. If wearers have certain special requirements like anti-scratch coating or the like, the lenses will be specialized with things like tinting or UV protection. Then eyeglasses need to put into the chosen frames securely so it is often necessary to heat them in order to make them pliable before insertion into the frames occurs. Once these have been carefully installed, it’s time for them to be cleaned up, packaged and shipped out to you.
After you get your prescription eyeglasses, you must make sure that they wouldn’t be broken or damaged. Some frames are flexible and can almost bounce back from instances which are made to handle abuse, although the technology of lens has come a long way they still aren’t capable of holding up well to excessive abuse. Once your lenses have been scraped up or heavily scratched, it could be back to square one, these lenses can’t be ground down to remove marring and therefore have impact on the vision suffers.
Although the process of making a pair of prescription glasses doesn’t sound incredibly difficult, it is a very exact science because even a minor error on the part of the technician will result in the useless for eyeglasses to the patient. So the utmost care and precision must be fined with every single lens which goes into the grinding machine.
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