Present Technology

Present Technology

Glasses are frames bearing lenses worn below the forehead and in front of your eyes with arms placed over your ears. They are mainly used to correct vision or protection from UV rays. Modern glasses are typically supported by pads on the bridge of the nose and by temples placed over the ears. Lenses were originally made from glass, but many are now made from different types of plastic. These materials reduce the danger of breakage and the greater weight of glass lenses. Plastic also offers more protection from ultraviolet light. Some people do not get glasses to correct their vision some people us them as a source of protection against flying debris. There are many different types of glasses. There are sunglasses, reading glasses, and many others. You can buy non-prescription or prescription sunglasses that are darkened to provide protection against bright light. Good sunglasses should also protect your eyes against ultraviolet light. Another type of glasses is bifocals. They are for people who have reading and seeing far away vision problems. Bifocals are a way to have two glasses in one. There are other names for glasses like spectacles or eyeglasses. Many people find glasses unattractive and prefer to wear contacts. On the other hand, some people prefer to wear glasses. As you get older your vision tends to get worse and causes more and more people to get them. That is why you see many elderly people with glasses. This is hereditary so if your parents or your grandparents have poor eye vision you are likely to have poor eye vision as well.