Eyehance lens replace for cataracts outcome

Hi,

thanks for the response, that sounds interesting. Would i lose a bit of the "quality" of vision doing this?

for example i understand i wont be able to see as far so well but id have a better range of vision overall?

As aposed to no correction where vision would be great but more dependence on glasses at short distance? like accessing my phone for example.

To get an idea what the impact is of using an Eyhance vs a standard Tecnis lens it is best to spend some time looking at the Defocus Curves for these lenses. See this article which has them graphed for these two lenses:

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PUBLISHED 15 APRIL 2021 IOL Review: 2021 Newcomers

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The limit of good vision is nominally 0.2 logMAR. The Eyhnace extends good close vision out by 0.5 Diopters. A standard Tecnis gives good vision out to -1.0 D, and the Eyhance extends that to -1.5 D. To convert diopters to distance divide 1 meter by the diopter number. So, -1.0 D is 1 meter, and -1.5 D is 0.66 meter, -2.0 is 0.5 meter, and so on.

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And on top of that if you under correct by 1.0 D that adds up to -2.5 D with the Eyhance. So, at least in theory it gives good vision down to 1/2.5 or 0.4 meters.

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It generally only takes one eye to see at a certain distance, as the brain selects the best of the two images available. So if the dominant eye is corrected for distance and the non dominant eye is corrected for closer, then you should see the range quite well.

I should have mentioned that when you under correct the whole curve moves to the right. Under correct by -1.0 and the whole curve moves 1.0 to the right. This improved close vision, but as you can see, it reduces distance vision.

hello, thanks for your response! that is encouraging news for sure! i hope it continues to get better for you.

sorry to be a pain but i have some questions if you don't mind me asking as i want to be sure about things.

is your eyesight at computer range as good as distance or just "good enough" to use it if that makes sense? I guess what I'm asking is do you feel a pair of glasses would improve the vision at that that range.

I guess the same question as above but for say watching television. I think what i am trying to get at is what distance does vision seem to drop off where you feel glasses would improve it.

Sorry for the long questions!

Just ask, we are here to share experiences and help each other. When it comes to watching television and seeing at a distance, that's great.

The vision on the computer isn’t that good yet so I could tell the glasses would help, but little.

But let's say the second day after the operation I couldn't even look at the computer, the brightness was too strong.

It is very encouraging that every morning my eyesight improves a bit.

The first few days I needed computer glasses. not anymore. So I think the situation will continue to improve, although I am more than happy with these results. As for the mobile phone, in order to be very satisfied, I have to use glasses, although my eyesight is improving, I can use it. but I increase the font of the letters, although I use a small Iphone SE2, so that's a small problem

Thanks 😃

you raised some good points and I'm starting to get a better picture of what its going to be like.

The glasses trade off at short range doesn't seem too bad when compared to the cloudiness and glare i have now.

I think i just need to make sure i am ready to go ahead with it as right now I can see close up and distance is not too bad with glasses, its just the glare, especially at night and the constant knowledge that i notice the cloudiness that is annoying

Thanks for the response, this really helped set some expectations and answer some of my major questions.

My surgeon did mention about the laser i would need at some point but that it should not change my vision once its been done.

If you dont mind me asking how did you know when you was ready to have it done? Meaning how bad did your eyes get?

right now my vision is "ok", i think its 20/40 (with -1 glasses, i needed -3 a few months ago but improved) I don't need glasses for short distance or at computer range. Distance i do need to wear glasses and glare is very bad right now, night time is really bad. And I am aware of my vision being cloudy.

The eye with the cataract had "yellowing" that I barely noticed. The biggest issue I had was just a steady worsening/blurring of vision, and constantly needing to have my glasses power strengthened. I did not experience glare, but I probably had a different type of cataract (the surgical cataract is a bit different). The eye with the cataract was my non-dominant eye, and my other eye really did all the heavy lifting, so it's hard to say how it might have affected me if the cataract was in both eyes.

If the glare is bothering you at night, I'd say that it seems worth getting the surgery. One thing I'd like to stress is that vision with these implants is NOT the same as our natural eyes, which could focus on their own. It was a big change for me. I'm unsure if you'll need implants in both eyes, but the change probably won't be as drastic for you, if you're just getting one.

I believe my corrected vision was 20/40 with glasses in the bad eye with the cataract. It would not get better than that. Now I get 20/20 in both eyes, minus a few letters, whereas I could not read the largest letter on the charts before without glasses. With my new glasses, which are progressives, I can read 20/15 distance. A lot of people with less severe prescriptions than me get this result post-surgery without glasses.

Overall, I am happy I got the surgery, and am pleased with my choice of Eyehance. I'm not sure I'd trade it for anything, even the fancy Symphony (I was not eligible due to retinal scarring).

But, this surgery is a big step and I'd ask lots of questions about possible side effects. I am currently fighting to find a second surgeon who will make my YAG opening bigger, because the YAG absolutely wrecked the good result that I had with the IOL's. I'm not saying this to scare you - but our young eyes are a little different, and I'd ask the surgeon lots of questions to make sure they have experience with young eyes or large pupil sizes (if you have large pupils).

Also - I'd advise not letting the surgeons rush you into YAG. It's harder to replace the lenses once we get the YAG done, and because our young eyes get PCO so fast, the surgeon might recommend it early. I'd make sure you're happy with the lens before you take that step.

thanks for the response, yeah i have it in both eyes - both practically same with how bad they are, vision was perfect at the start of the year so all happened quite fast, I dont drive but if I did there is 0 chance i could at night due to the glare, its blinding.

when you say different, is it the fact that you just cannot focus close, and only glasses aid in that sense then you ofcourse need to take them off to be able to see distance again? This is part i know i am going to find annoying but there isnt going to be much choice hah, in sure i will get used to it eventually.

and thanks for the warning about the YAG, i hope you get that sorted and its back to how it was pre getting it done.

Yes, I'd say the loss of being able to focus is the biggest difference. I don't think I thought much of it before getting the surgery - I figured that after a lifetime of wearing glasses, putting on readers would be no big deal, but it is a bit of a lifestyle change. If you opt to get plain old readers, rather than progressive glasses, there is a lot of taking them off and putting them back on. I kept finding myself bringing things closer to my face out of habit, trying to focus.

That said, the need for the readers is minimal enough that I would not have gotten the progressives made at all, had my surgeon not insisted that it was a little bit of residual astigmatism causing the debilitating night glare after the YAG. Drugstore readers worked just fine - now I just wear the progressives for convenience.

If both of your eyes are affected, I'd definitely encourage the surgery. Even WITH my botched YAG, I can see to drive at night (even if it makes me cranky). With the level of glare and haze you're seeing, I bet you're going to absolutely love the result of the Eyehance. You're probably going to be stunned at the color vision to get. Compared to what I had before, even in my good eye, the color is like high resolution.

For what it's worth, my GP's wife got the really expensive multifocal implants put in, and she still needs bright light and/or readers to read fine print. This is about the same as me with my Eyehance.

right i see, this has been so helpful and so i extremely appreciate your time to talk.

I think i will find the readers annoying but i will manage, there are plenty of worse things out there! and its probably less annoying than the situation i have going on now!

Yeah i saw around a lot the actual quality of vision seems to be better with the monofocal lens's and clear vision is more important to me and i am happy if glasses are needed to achieve that.

I think its very likely now I will get it done in February. Its definitely been something I've put a lot of thought into the past few days!

I'm very happy I could help! Talking about my lenses has actually helped remind me of the positives - I've been so angry about the YAG thing for the past few days that it's hard to appreciate them for their good qualities.

I've read lots about pupil sizes and their effect on glare, trying to learn more about my strange problem, and have come across lots of complaints about the multifocal implants causing glare, concentric rings around lights, etc. Especially in the case of larger pupils (our pupils shrink with age). If had no retinal problems, I would have definitely chosen a multifocal lens, paid tons of money, and maybe been really unhappy with these lights. I'm very, very glad I ended up with an "enhanced" monofocal.

If you have any questions before and after the surgery, definitely feel free to message me, as I'm similar in age and went through it already. I'd be more than happy to share experiences.

I certainly will probably give you a message closer to the time then, i really appreciate that.

Agreed, I think i also would have and actually planned to go with a multi focal lens originally but due to my diabetes my consultant basically refused to do it for me and recomended this is the safest and best lens to get for my situation, he seems to be pretty good.

About the YAG, I can imagine it being extremely annoying, especially after the original surgery went so well! My fingers will

be crossed you manage to get it corrected soon!