Bifocal lenses are more complicated than other types, and this is the main difficulty many people have when they try to purchase bifocal glasses online. they wonder whether or not these lenses are right and comfortable. GlassesShop.com, as an expert online glasses store for more than 10 years, sell high quality bifocal lenses, especially bifocal lenses with a line which are customized for them so as to help them see better. There are also dozens of cool frames that are available for these lenses.
What is bifocal lenses?
eyeglasses with two distinct optical powers, are most commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
With a bifocal, the upper part of the lens is generally used for distance vision, while the lower part is used for near vision. Usually, a segment line separates the two. Typically a person with myopia would have one section of a prescription lens that has a certain diverging power while another section of the lens would have a lower diverging power for close-up work. Similarly, a person with hyperopia would have one section of the lens with a certain converging power and another section with a greater power for close-up work.
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