I am not familiar with the Physiol Fine Vision IOL. It is probably a defractive IOL from what you describe and it is working like it should. Multifocal IOLs work best when implanted in both eyes. 3 1/2 month is too early to exchange. In some people it can take more than 6 months to adapt. There is no presbyopic IOL that will correct all ranges of vision. Your choice is good distance and near with moderate to poor intermediate-multifocal, or good distance and intermediate with an accommodative IOL. With the accommodative IOL you will need readers for near.
Many thanks for your reply Dr Oyakawa. May I just clarify please - is it a good idea to mix different lenses in each eye, or would I get a better result from having the same lens in both eyes. Also, if I were to have a bifocal lens in my other eye set for intermediate/distance vision, would this improve my intermediate vision and still give me the good distance vision I have at the moment in this unoperated eye,.
I received your personal message requesting my input. I have no personal experience with this issue. I think that if you went along with your doctor's suggestions (YAG and bifocal IOL for your second eye), you might be pleased with the improvement in your vision (especially your intermediate vision.) Or you might have vision problems that are far worse than what you have now--problems that impair your ability to read, to use your computer, and to drive. In this case, your vision might improve over time--or it might not improve at all.
Personally, I'm risk-averse when it comes to my vision. Why does your doctor think that you would need glasses for all distances if you were to replace the multifocal IOL with a monofocal IOL? This statement makes no sense to me. In your place, this option would be my choice. I'd find a surgeon who is very experienced in exchanging lenses and opt for mini-monovision with monofocal lenses (distance vision in dominant eye, intermediate vision in non-dominant eye). This gives most people very good distance and intermediate vision and some reading ability without glasses. Since you currently have good distance vision in your second eye, you could postpone cataract surgery for that eye until you need it. I'd have the power in the exchanged IOL set according to whether it is the dominant or non-dominant eye.
Thank you very much for that. You are right, taking risks with your vision is a bad idea, I have learnt that to my cost. I agree with your suggestion of mini-monovision. I have already suggested this to my surgeon, the thing that put me off was the prognosis of having to accept I may need glasses at all distances, in which case I would be in a worse position than before and from what I can gather, you need a good outcome for distance in the dominant eye with monofocals before you can set the other eye for intermediate range. To complicate things I have been plagued with inflammation since the surgery and I am still on strong steroid drops, which is very concerning. My eye just does not `feel' right at all and I am aware of it all the time. It feels like I have a contact lens in and it is getting stuck in the wrong position. There is also a `pulling, sort of tight sensation' in my eye, which is my dominant eye. I have searched through the posts on here and done many searches, but this doesn't seem to be a common thing. I know I must decide fairly soon whether to have the lens explanted, I just want to make sure I make a good decision this time.
I don't think you have to make a decision real soon, so don't feel pressured to do so. There isn't a time limit for an explant. Dr. Oyakawa feels that you may adjust to the multifocal IOL with more time.
The archives of this website contains posts from a number of people who had a multifocal lens explanted and replaced with a monofocal lens. Most people opted for mini-monovision, and I think that everyone ended up happy with their vision. Try entering key words (e.g., "explant ReStor") in the search engine at the top right corner of this page. In most cases, the multifocal IOL that was explanted was a ReStor.
Look at it this way: you need a good outcome for distance for a multifocal IOL to work. If your surgeon can achieve this, then why can't he achieve a good outcome for a monofocal IOL? He already has feedback about your correct power in a Physiol Fine Vision multifocal IOL. Worst case scenario (very unlikely with an experienced surgeon): the power of the monofocal will be slightly off in your dominant eye. In this case, you could have the IOL in your second eye set for distance. This would give you good distance vision without glasses, but you would need readers for near/intermediate vision. (Why would you need glasses for all distances with monofocals? This makes no sense to me.)
Thank you so much again for your advice. This was my surgeon's response by email regarding explanting the lens:
When considering a IOL exchange - we are in a territory where securing any IOL back into the favoured position of behind the iris (called the posterior chamber) would be a welcome bonus - it would not matter very much at all whether it was aspheric or not - any difference in real outcome would be within the margins of error anyway. Furthermore what your research may not have revealed is that aspheric implants and especially prolate surface implants such as the tecnis have to be very central in order to have any additional benefit. Any decent ration of such implants tend to degrade the quality of vision. When we place an implant in the posterior chamber and even in the bag after an IOL exchange cent ration is much less certain so my preferred option is to use a typical implant that doesn't have any modifications re spherical aberration. As you will appreciate some people can have some depth of focus even with mono focal implants - that would be a bonus and not any specific aim - the aim would be to extract the physiol and reimplant a mono focal implant - aiming for a prescription of zero (i.e. good vision for distance) but in these scenarios accuracy is not as high as it would be for primary procedures. If we go down the road of an exchange of the physiol I think its important to be able to accept the certain need for glasses for near , very likely for intermediate and fairly likely for distance too in that eye. The only reason to consider this option is due to the level of dissatisfa_ction that you are experiencing with the implants side effects and thus the aim is to alleviate these side effects but I re iterate you must fully accept that glasses would be a very likely long term requirement in that eventuality. For many people who are really troubled by the side effects of bifocal / multifocal lens implants alleviating the side effects must outweigh the whole issue of desire for spectacle independence. Regarding your last question in this para - theres every reason to expect your distance vision to be very good - but in the corrected state - i.e. with glasses if there is any notable prescription.
I am still favouring this route and looking into other surgeons now for mini-monovision. I have been told by another surgeon that my eye has been `over corrected' and another said I appeared to have a myopic refractive surprise, would this affect the eventual outcome of the explant?