Bifocal Contact Lenses
Anyone who has needed prescription bifocal glasses in the past waited for years in order to be able to wear bifocal contact lenses. Bifocal contact lenses are now more than a wish for anyone who ever wanted to shed their bifocal glasses for the convenience and look of contacts. All bifocal contact lenses are designed to provide corrected vision to people who have a condition that is known as presbyopia. Presbyopia is farsightedness resulting from a reduced ability to focus caused by loss of elasticity of the crystalline lens with age and requires those who have it to wear bifocal contact lenses.
People who required something like bifocal contact lenses will often have to hold reading material or other reading material closer to the eyes in order to make out the words. Just about every maker of bifocal contact lenses is available in either a soft contact lens or a gas permeable contact lens. The latest in bifocal contact lens technology and development also allow contact lens wearers to choose disposable contact lenses that can be replaced after wearing them for just a short time. Some of the disposable contact lenses allow users to have new bifocal contact lenses for each day of the week.
Bifocal contact lenses are made similar to the way bifocal glasses were designed to offer wearers two different visions when looking in a particular direction. Bifocal contact lenses have two different strengths that correct nearsighted vision and farsighted vision. Each time a person puts on their bifocal contact lenses, he or she may take some time to get used to the way the two different powers blend when viewing various distances, but the eye adjusts quickly and any contrasting or blurred areas will be differentiated in no time.
Bifocal contact lenses can be made in different designs including concentric, alternating and simultaneous vision styles. Bifocal contact lenses that are made with the concentric design have the center part of the lens with the distance power and the outside portion of the lens has the closer power. Bifocal contact lenses that are made with the alternating vision style are quite similar to the way traditional bifocal eyeglasses are made with a line separating the two powers into the top half and the bottom half of the lens. Bifocal contact lenses made with the simultaneous vision style places the center of the lens over the cornea so that the two powers are split over the pupil and the eye trains itself to tell the difference between the powers that accommodate the proper vision necessary.
About The Author: Kevin Lynch is the owner of nu Contact Lenses website, which have tons of resources with a variety of information, news and more.
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