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by phkahler 1659 days ago
>> Hopefully this time it works, because this is the only real solution, and not pupil size manipulation.

My optometrist told me something I had a hard time believing. He said there are progressive lenses you can get with cataract surgery. I still can't believe that. This came up after talking about the long term problems with lasik. I said what if I just got cataract surgery now? I still can't believe they can do progressives.

3 comments

Its a multi-focal lens. My optometrist and another friend both have them. It splits the incoming light and you need to focus with your attention, not mechanically, which is interesting. The downside my friend reports is that reading requires a very bright light because not all of the light is falling on your retina.

I just got an implant in one eye a month ago. I chose single-focus at distance. I would rather deal with reading glasses than the other oddities, but I did consider the option.

BTW the implant surgery was quick and simple and life is much better afterwards. Recommend.

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.

Do you mean progressive inter ocular lens? Or like progressive lens (glasses)?
Both options exist, but both are actually trade offs in all 3 segments (near-mid-far field). Intraocular ones have been existing and evolving in the market for a long time now, but really none are perfect. If your job or lifestyle dictates a good visual acuity at a certain distance don't go with these options.