If you have difficulty with myopia and presbyopia, and then the multifocal eyeglasses are very useful for your eyes. It includes two sight corrections in an individual lens, one to correct your short-sighted vision and one for the long-sightedness. Before multifocal, getting two sight corrections within one lens required bifocal glasses. Compared with the multifocal, bifocal is a short-sight correction lens that has a separate long-sight correction lens contained in a small area in the lower half of a lens. The disadvantages of this though are that to use your long-sight correction you have to take care to look using a small lens area at the bottom of the lens. These glasses also often look strange. The multifocal eyeglasses can delay the development of myopia. This kind of lenses has … Read entire article »