I just turned forty and have never worn glasses before, now my optometrist tells me I need bifocals. What are bifocals and what is going on?
The natural lens inside of your eye is able to change shape to help you focus up close. As the years come and go the lens begins to harden and focusing up close becomes more difficult. This usually happens around the age of forty. You will hear people say that their arms aren't long enough because they have to hold the reading material out farther. Ben Franklin invented the bifocal lens by putting two lenses together. The top part of the lens is for seeing at distance and the bottom part of the lens is for seeing up close. It is two lenses in one. Bifocals come in many different shapes and sizes. The most common types are flat top bifocals and no-line bifocals. The flat top bifocal looks like the letter D turned on it's side, with the flat side up. The newest type of bifocals are the no-line or invisible bifocals. A person looking at your glasses can not tell that you are wearing bifocals because all of the bifocal edges have been blended into the lens. When getting your new glasses, be sure and ask our technicians about the latest in bifocal designs.
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- Jun 17, 2010
- Jun 17, 2010