• Register
settingsLogin | Registersettings
Show Menu

How Eyeglasses are Made?

0 votes
17 views
How Eyeglasses are Made?
asked Oct 12, 2016 in Health by smyadmin

1 Answer

0 votes
Today's eye glasses are most often made of plastic, The exact science of how eye glasses are made involves a very precise, very detailed system of events. After a patient's eyes are tested to determine whether or not eye glasses are needed, if it is determined that eye glasses will be prescribed, a technician then has the task of figuring out the patient's necessary prescription strength. A special computer is used in determining this and it prints the exact specifications for how to manufacture the prescribed lens for the patient's eye glasses. The physical creation of the prescribed eye glasses then involves the technician comparing a pair of plastic blanks until an appropriate one is found for the patient's prescription. The remaining prescription strength needed is then ground into the blanks at the back of the lens.Next is the blocking process, which is when the optical center of the eye glasses is located. More grinding sets the necessary degrees or curves that are needed to achieve the optical strength that the eye glasses need. The lens is then shaped or beveled, and polished to perfection.While different types of plastics are used in making glasses, a very lightweight polycarbonate known as "Featherweight" is the most durable, the most popular, and the most expensive. Also, if a patient prefers tinted eye glasses, the lenses are specially treated before being finally inserted into whichever frames the patient has selected.Because of advances in technology and the materials used, today's eye glasses are much more durable than in years past, and many people even regard them as fashion accessories.
answered Oct 12, 2016 by moscl

Related questions

0 votes
1
answer
15 views
0 votes
1
answer
15 views
15 views asked Oct 12, 2016 in Health by smyadmin
0 votes
0
answers
46 views
46 views asked Feb 10, 2017 in Health by smyadmin
0 votes
0
answers
51 views
51 views asked Feb 10, 2017 in Health by smyadmin
0 votes
0
answers
117 views
Welcome to Koees Questions and Answers, where you can ask questions and receive answers from other members of the community.
...