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The first eyeglass frame temples were made by Spanish craftsmen in 1600’s. They affixed ribbons of silk or strings to the frame and loop them over the user’s ears. The new types of eyeglasses carried out to China by Spanish and Italian missionaries. Instead of making loops, the Chinese attached small metal weights to the strings. In 1730 Optician Edward Scarlett designed rigid temples that rest atop the wearer’s ears.Glass, plastic or polycarbonate are lens materials for glasses. Glass was the original material for spectacles because it has great optical clarity, but the glass lenses can be very heavy in stronger prescriptions. Plastic lenses are much lighter than glass but they are prone to easily being scratched. The lightest and thinnest lens material for glasses is polycarbonate, also called CR-39.It is believed that approximately 64 percent of the adult population in America wear glasses while 20.5 million age 60 and over have cataracts.Incorrect eyeglasses may do harm to your eyes, so lenses should be prescribed by an ophthalmologist or optometrist and made by a skilled optician.
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Benjamin Franklin contributed by inventing bifocals, and around the same time, hinges were introduced so that glasses could be folded and stored in a pocket. Eye doctors were getting better and better at tailoring lenses to patients’ specific needs, with cylindrical spectacles coming along in the early 1800s to correct astigmatism, but it wasn’t until 1862 that Dutch eye doctor Herman Snellen invented the “big E” chart that standardized vision correction.Modern GlassesNowadays, we get to enjoy the benefits of two thousand years of improvements to vision correction. We can choose from a range of materialsdepending on our individual situations, we can have protective lens coatings to make them even more effective and durable, and we can choose from countless frame styles and colors to suit our personalities. If you’re in need of a new pair of glasses, just let us know and we can help!
