Recently, more and more people at a young age suffer from impaired vision. As a result, the demand for bifocal reading glasses is high. Spectacles together with contact lenses are considered some of the most innovative products today. Their function is quite valuable as they are tools for helping people to see much clearly and conveniently. Compare to contact lenses, spectacles offer more convenience to people age 40 and up.
Origin of Bifocals
As their name implies, spectacles are eyeglasses with two distinct optical powers. They are designed for individuals with symptoms myopia or astigmatism. The eyeglasses were invented way back around 1760. They are first developed or used by Benjamin Franklin, an American statesman and investor. During this time, Benjamin suffered from presbyopia and nearsightedness. This inspired him to create his own eyeglasses.
The Benefits of Bifocals
Spectacles are designed to allow the user to improve his focus on a certain object either far or near him. Presbyopia is a condition where in a person suffers from the difficulty of focusing objects that are far and near. The spectacles provide an ease of transition from focusing onto far objects to near objects. They have two sections on each lens. The upper section is expected to aid in distance vision while the lower section magnifies objects. With this kind of lens, you do not need two sets of eyeglasses as the spectacles provide everything you need.
Styles and Designs
Spectacles can come in wide variety of styles and designs and they can be bought in high-end fashion stores, local eye care center and even online. These eyeglasses are available for both men and women. They can have classy feminine frames or thick metal frames. The styles vary from retro to modern style. One great example is the tinted reading glasses that are bifocal. Basically, they are sold in four distinctive designs depending on the method use for embedding the lenses.