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Monofocal Lenses and Multifocal Lenses, Knowing Which One is Best by Kate Dawson
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Monofocal Lenses and Multifocal Lenses, Knowing Which One is Best |
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Health
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Getting surgery to finally deal with a cataract problem or refractive eye condition, can spell the start to a new life of crystal clear vision. That, of course, is the key motive behind such decisions, but there is more to consider. Perhaps the most important is which lens to have implanted, with a choice between multifocal and monofocal lenses. By far the most common is the monofocal option, which has long been the basic lens option in surgery to replace cataract natural eye lenses. It would seem that their place in the procedure is assured, given their practically perfect record as replacement lenses, but in recent years the multifocal lens has become increasingly popular. There are a number of reasons why this is the case, though principally practical. The typical cataract surgery cost is easily covered by financial plans and, in some cases, health insurance. The choice between the two types of lens technologies, meanwhile, has nothing to do with cataracts risk factors. The risk of developing cataracts is removed with a replacement lens. The Differences At first glance, it might seem that there is very little difference between the two types of lenses, but there are very real differences when one is using them. Basically, a monofocal is designed to handle one kind of vision, either to see figures at distance clearly, or to see items close up clearly. What this means is that the vision of a patient that has had these lenses implanted is improved in only one way, thus not quite returning their sight to perfection. However, as the name suggests, multifocal lenses allow the wearer a variety of ranges by allowing the eye to focus on either items at a distance or close up. This is down to the design of the lens. Understandably, this lens implant is more expensive but this fact has not put off very many, with patients willing to accept the extra cost for the sake of a better eyesight. The reasons why the respective lenses have these capabilities are simply down to their structural differences. Lenses, which are made of either plastic or silicone, simply bend light in a different way to achieve the difference. A lens that is monofocal in design, for example, has a zone of clear focus near the edges to bend light from near objects onto the retina. Alternatively, if the clear zone is near the centre of the lens, then it can accommodate distant object better. Multifocal lenses, however, have more than one clear zone, which means that both near and far objects can be accommodated. Where Monofocal is the Best Choice Because of its structure and capability, the patient has to choose which type of monofocal they want to have implanted. This often comes down to the practical needs of the patient, who may have an occupation that requires seeing at distance. But the vast majority of patients prefer the monofocal designed for distance because it marks the biggest improvement in sight. Lenses designed for close objects are really only useful for those whose lives are spent up close to or handling intricate items, such as a repair professional or academic. However, practically everyone needs to see at distance, for driving and enjoying sports and time off, for example. Glasses can be worn when studying, reading or examining. Where Mutlifocal is the Best Choice Multifocal lenses enjoy an advantage over monofocal lenses in that they can accommodate both distant and close vision, the need for prescription eye glasses is negated completely. This is a huge advantage to people who enjoy a fully active life, and are particularly tired of using eye glasses of any description. People who enjoy the outdoors, for example, want to see the world around them without any blurred effect, but also want to be able to read in the evening without first having to search for their glasses. In essence, the matter of lenses really comes down to the patient and the lifestyle and preferences that he or she has. It is worth noting that the cataracts risk factors are removed as the lens, being synthetic, is not going to suffer the same problems as a natural lens. What is affected is the refractive lens exchange cost or cataract surgery cost, which increases when multifocal lenses are implanted.
Related Articles -
monofocal lenses, cataracts risk factors, cataract surgery cost,
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