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by quitit
1659 days ago
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There are a range of IOLs (intraocular lenses) which can provide more than a single range (monofocal) of vision. While bifocal has existed on the market for some time, trifocal iols now also exist and mostly use a lenticular lens to present focus of near, intermediate and far vision together - however like other multifocal technologies an adjustment period is required and they are not for everyone (your brain needs to adjust to the fuzziness and the fact that the image is not resultant from the natural lens being manipulated can be difficult for some people to work with). There are also other approaches to this problem such as crystalens which is an iol that attempts to solve the same issue by moving forwards and backwards - however this kind of approach is falling out of favour. The names in this space are johnson and johnson, alcon (novartis), zeiss, bausch and lomb and hoya. This field is rapidly developing with new iols every year, some newer products are promising a wide range of vision without the use of a lenticular lens which seems promising but might be more hype than reality. As for you and your vision: only your ophthalmologist can truly advise if any of these will work for you as there are a myriad of factors at play including some that might not seem obvious such as the patient’s behaviour and expectations. |
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