This patient support community is for discussions relating to eye care,
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glaucoma,
retinal detachment, eye infections,
misaligned eyes, intra-ocular implants, refractive surgery (
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eye pain and discomfort, pediatric eye disorders, eyelid and tearduct surgery, poor eyesight, and eye surgery.
Your choice.
JCH III MD
What I have been hearing is that the new wavefront technology is offering better lenses, but it is also new technology. Can you wait a year or so before doing surgery? This will give time to see what new technology is available.
With my Toric I choose to have my vision more clear for distance, and it is true that it is more crisp than it was, but it was not really bad to begin with. Sone of the crispness is also from having the fogginess of the cataract removed. My reading distance is not as good as before. I wasn't really thinking, because the small astigmatism I had at 1 diopter was easily fixed with only 1.5 reading glasses from the drug store and I still have to use reading glasses after surgery with the Toric. These are all things to consider for low astigmatism. If I had to do it again I would have done the LRI and gone with a technis aspheric IOL.
How is your vision other than the astigmatism?
Laura5
From everything I've read, negative dysphotopsia is more common with acrylic (as opposed to silicone) lenses. Laura4, that's why I thought that you'd probably be happier with the silicone version of Tecnis lens, manufactured by AMO. (The Tecnis lens is also made in acrylic.)
Laura4, it sounds like you were myopic before cataract surgery. If your target was good distance vision, it's normal and expected for your distance vision to improve and your close vision to be less sharp post-surgery.
I would have gotten the AcrySof toric lens if it had come in a power sufficient to correct my high myopia. So I got aspheric lenses and LRI's instead, with excellent results. My advice to others would be to choose a skilled and experienced surgeon, get his/her recommendations, and do some research on your own before deciding. It doesn't hurt to get recommendations from more than one surgeon before proceeding.
Laura4, thanks also for the suggestion to wait for the new technology. Unfortunately, I'm not able to wait very long.
It's pretty challenging right now to work (in an office), drive, cook, etc. with thick glasses that don't correct my vision very well. I'm being extra-cautious (slow) and checking everything 2 or 3 times.
(Also, my right eye vision has been distorted for awhile by an epiretinal membrane - scar tissue resulting from being very myopic. Lately, the left eye has also been more affected - as if I'm looking through finely texturized plastic, sometimes with a white haze as well. Despite this, my eye chart vision is not that bad, R: 20/60 and L: 20/40.)
I'm hoping that, after the cataract surgery, it will be like having contact lenses in my eyes - even though I'm expecting to still wear lighter glasses for both reading and distance actiivities like driving.
Laura4, I think JodieJ is right that it would be normal for you to still need reading glasses if you chose to have your distance vision more clear. I'm making the same choice. It would be so nice to be able to walk around outside without glasses - which wouldn't be possible if I chose to have my close vision more clear. Like you, I'm already in the habit of having a pair of drugstore readers handy for when I sit down to read.
Best of luck to you, Laura4, in deciding what to do - and with the outcome too. Please let us know how you are doing. I'll report back too.
If I did not have the negative dysphotopsia and other higher order aberrations the Toric does create crisp distance vision. If you decide to go with the Toric I hope you do not have these other problems. My surgeon at first said that they were rare, now he says they are quite common.
I'm amazed by the amount of anxiety I have around the vision stress with these complications. As a landscape designer and naturalist (also muscian) my identity and sense of groundedness was very much through my vision - walking, checking out trees and sky. I'll soon be leading an interfaith walk called "Meet the Trees". It's a large event. Last time I focused on a branch in a tree the limbs below it went into double vision. When driving the letters on signs at a specific distance and angle jump in and out of double vision. Almost every day at some point I break down from the stress of it. Actually sent email to 6 eye surgeons at Scheie Institute today. Not giving up.
Laura4
You can get a preview of what your post-surgery vision would be like with ReStor/ReZoom by looking thru a RGP multifocal contact lens. Before my retinal surgery, the zones of vision in a multifocal contact interacted with my macular wrinkling to produce one big blur in a eye that could read the 20/50 line with a regular contact.
What is your best corrected vision with glasses alone (no contacts)? This is probably as good as you will get with the best monofocal implants, if everything goes perfectly.
If your ERM is affecting your vision significantly, you might consider having retinal surgery to peel it. This procedure restored the vision in my affected eye to 20/20+ (although I still have some residual distortion.) (Un)fortunately, having a vitrectomy causes a cataract to develop. In my case, this turned out to be a blessing in disguise--the cataract surgery eliminated my high myopia, and my insurance covered the entire bill.
Laura, I think your anxiety is normal, given your symptoms. Hopefully, they will soon be resolved, and you can put an end to this chapter.
I'm gIad that having to wear reading glasses post-cataract surgery was not unexpected for you.
Re-reading your March 16 post, I would just mention that I think reading glasses only correct presbyopia (the far-sightedness that most people get in their 40's), and not astigmatism (irregular curvature of the eye) which is corrected by a toric lens, limbal relaxing incisions, etc. I don't have any special knowledge in this field, as you can see from my posts, so I hope someone will correct me if I'm wrong.
It's helpful to know that your surgeon says that visual aberrations are quite common with toric lenses. That would be a good reason for me to choose an aspheric lens if possible.
I can really identify with your feelings of anxiety. It must be incredibly stressful to try to always carry on calmly, even be a leader of a big event, with double vision jumping out at you. Like you, I'm trying to keep up all my usual activities but it feels overwhelming at times. Even making Easter dinner for family will be difficult and I don't want them to feel my stress. Luckily, my hobby of ballroom dancing doesn't require good vision. Often, I just feel like not going anywhere and not seeing anyone - which is what convinces me that I have to have the surgery and keep searching for solutions - not give up, as you say.
To JodieJ,
If I have the choice, I will probably ask for an aspheric lens rather than a toric lens to reduce the possibility of visual aberrations - although the aspheric lens my cataract surgeon recommends is the Alcon IQ which is also acrylic. I don't think I could handle aberrations like Laura4 is dealing with on top of the distortions I already have and facing retinal surgery.
I did see my retinal surgeon who said it was fine with him if I have the catarct surgery first. He said that he will likely do an ERM peel of the R eye after cataract surgery has been done on both eyes, but he didn't mention anything about this changing the astigmatism. If he does use the sutureless vitrectomy equipment, does that mean that the ERM peel should not affect the astigmatism?
Do you know whether astigmatism changes a lot from not wearing contact lenses in preparation for cataract surgery? For many years, my astigmatism has been -2.5 in my R eye and none in my L eye. Now, after a few months of not wearing my contacts, I'm told that it is -1.5 in each eye. Perhaps cataract surgeons measure astigmatism differently?
I'm also experiencing slight double vision (strabismus?) which I've mainly noticed when sitting in the dark watching a play - there are two of each person on the stage. So will have to look into that at some point as well.
It's immensely reassuring to me, and I'm sure to Laura4 also, that you've dealt with your vision problems successfully.
Not wearing contacts does indeed affect corneal measurements. The numbers are plugged into a complicated formula used to determine the power of your IOL.
I also have Alcon IQ lenses, and I've never had the type of symptoms that Laura describes. Many retinal surgeons prefer that their patients get acrylic (rather than silicone) lenses--mine did. Because Alcon's toric lens is relatively new, there probably isn't much data available about the incidence of negative dysphotopsia. However, if Laura's doctors state that there is an association, that would be a red flag in my mind.
I also agree with the red flag in relation to toric lenses based on what Laura's doctors have said.
Just trying to improve my technical language here. Dr. John, hope my understanding is correct.
I have one other technical question. If the lowest powered Toric lens has a 1.5 correction, what does that mean for someone with only ,80 diopter of atigmatism. I now have the correct number for my pre surgical astigmatism. That's nothing compared to what Jodie has been describing.
Laura4
JCH III MD
With respect to Dr. Hagen's comments about astigmatism, is it possible that measuring this is not an exact matter? I'm wondering this because you might be concerned about possibly being over-corrected.
(The cataract surgeon told me about a week ago that my right eye had 1.5 D. astigmatism but the optometrist said today that it is 2.0 D. However, in my case this could be because retinal scarring makes it difficult for me to answer consistently - when they ask which of two lenses give a better picture.)
I hope I am understanding the technology of these Toric lenses. I believe there are 3 models in 3 different powers. Mine was the lowest, an SN60T3. If Dr. Hagan is correct, and it's not possible to do more adjustment of the power from the 1.5 of my model than it would be true that I would not medically have been a candidate for even the lowest power Toric. But I still am not sure of my technical understanding. I was also told that a 1.5 would adjust back to a 1.0. Even so, that's crazy if I only had .80 to begin with.
Laura4
Laura4
Just to summarize things I've already mentioned:
My prescription is high, pupils are small and astigmatism in my left eye is -1.5 and in my right eye is between -1.5 and -2. I won't be able to wear contact lenses afterwards because of pterygia. Lately, I've been seeing more distortion and a smaller image in my R eye with some double vision - but hopefully this will be improved with an ERM peel after the cataract surgery.
My cataract surgeon has recommended a toric lens because it would correct the astigmatism without LRI and without wearing glasses all the time. He says he has implanted many of them since last year. However, he'd probably be quite willing to use another lens as he says I'm borderline.
In a 2007 post, Jodie mentioned that the aspheric lenses work better with larger pupils and that they improve contrast sensitivity and distance vision. She also mentioned that near and intermediate vision are not as good as with a conventional lens but that was not important to her because she planned to wear multi-focal contacts post-surgery.
Here are my questions:
- Because of my small pupils and inability to wear contacts, do you think I would be better with just a conventional lens rather than an aspheric one?
- With either an aspheric or a conventional lens, I would have LRI or wear glasses all the time. Would LRI be risky for me because of a previous HSV infection?
- If I did get a toric lens, would my small pupils make me less prone to dysphotopsia?
- On the other hand, would my high prescription or other factors make me more prone to it?
- Are there any particular questions I should ask my cataract surgeon?
Thanks very much for reading this long post and for considering my questions.
Laura4, according to Alcon's toric power calculator, the 1.50 D toric model is supposed to be appropriate for eliminating between .75D and 1.50D of astigmatism. So I guess you were in the range (but barely).
I hope you don't mind if I ask you also about the aniseikonia that you had after your ERM surgery. I've been trying to research this and other matters in posts on this site and also on Google but don't have your great ability to distill the (often contradictory) information into practical conclusions. Also, I think the matters you've had to deal with are very similar to mine.
I think my right eye has retinally-induced aniseikonia from an ERM (smaller image, double vision). I'm hoping that this will be at least partly corrected by an ERM peel that will likely be done a few months after the cataract surgery. Do you think it's ok to just ignore the aniseikonia for now?
However, in the cataract surgery, should I aim for plano for both eyes because of the aniseikonia - rather than the slight weakening (-.5 and -.75) I'm considering to preserve some intermediate vision? (I think you said that you requested plano for both eyes because of double vision and eye muscle problems but am not sure whether this was double vision related to your aniseikonia.)
Thanks for your cheerful prediction too, Jodie. I'm sure you're right about freedom from high myopia. I can't imagine being able to wake up and see without correction. Even if my vision is not perfect it's bound to be better than the coke-bottle glasses I've been wearing for 3 months.
Dr. Gerard de Wit of the Netherlands is (at least in my opinion) a world authority on retinally-induced aniseikonia. His website at opticaldiagnostics dot com contains lots of info about this condition and its treatment with corrective lenses. There's also an aniseikonia support group on yahoo with good info.
My double vision happened before I developed the ERM. It was caused by the breakdown of a phoria secondary to monovision contact lens wear, so I didn't want to risk even modified monovision post cataract surgery. It might actually be a good idea for you to determine the cause of your double vision before you have cataract surgery; you'd have to see a pediatric/strabismus ophthalmologist. (It's probably, but not certainly, related to the ERM.)
I hope my references don't get censored; this website discourages links to other sources of info. If they do get deleted or you have other questions, send me a personal message.
My retinal surgeon did say that he would remove the ILM. I think this reduces the chances of recurrence of the ERM. If it might also correct the aniseikonia, that would be a a real bonus.
I'll try to see a pediatric/strabismus ophthamologist - hopefully they can fit me in before the cataract surgery. I also wore contact lenses with monovision (until recently developing pterigia - which is why the cataract surgery is being done first) so it would be good to rule out other causes such as phoria. (I may have eye problems but my vocabulary is increasing by leaps and bounds.)
I feel that I shouldn't impose on you so much, but wondered if I could ask you some more questions. If you don't have time to answer, or not right away, I understand completely.
1. Do spherical lenses show in any way or make your eyes bulge out? I know this is a funny question but an article I read said that aspheric lenses (which are flattened on the top I think) are better for cosmetic reasons.
2. For compensation by the good eye to work, do you think I should ask the doctor about correcting both eyes to plano? Or would correcting both to -.5 be a good goal as it would allow some intermediate vision as well as this compensation? I know the amount of correction is not precisely predictable in any event - which might be another reason to aim for the same for both eyes - although I wouldn't want the poorer right eye to accidentally end up stronger.
3. With spherical lenses, is it possible that I might not need LRI to correct astigmatism of -1.5 to -.2 D? I think I recall Dr. Hagan saying that up to 1 D of astigmatism could be corrected just by the way the lens incision is made - which might leave me with quite a small amount. Also, an article mentioned that, to get the benefit of aspheric lenses, astigmatism correction must be precise, from which I'm inferring that it doesn't need to be as precise for spherical lenses. It would be nice to avoid LRI because another article mentioned that they can cause dryness which I already have from mild pterigia.
4. I'm also thinking that conventional spherical lenses might be better for me because they don't need to be centred and tilted quite as precisely as toric and aspheric lenses - so subsequent surgeries would be less likely to affect them. Does this make sense to you?
Thanks so much, Jodie. I'll talk about these things with the cataract surgeon of course but think it will help both him and me if I know a little more before I see him.
1) Bulging eyes??? I've never heard of this, and I've never known (or noticed) anyone who had it.
2) I think the issue of which correction would work best for you is something you should discuss with your cataract surgeon. (It might help to get input from your retinal surgeon, too.) My target for cataract surgery was -.5D, but I ended up plano. Having both eyes plano is great for driving, watching movies in the theater, and spectator sports. Otherwise, the loss of near/intermediate vision drives me crazy, and I almost always wear my progressive glasses or (sometimes) bifocal contacts. (I do have a friend who also has both eyes plano, and he wears his drug store readers less than 5% of the time.) I don't think I'd be much happier with both eyes at .5D, though. It's been three years now, but I still miss my monovision contacts.
3) I think that astigmatism between 1.5D to 2.0D would significantly affect your vision at all distances. Your cataract surgeon can advise you about this.
4) One of the aspheric lens models--I think it's the Bausch & Lomb Sofport (sp?)--is supposed to work well even if its slightly off-center and/or tilted. The patient education video at tecnisiol dot com suggests that aspheric IOLs are the best technical innovation since sliced bread. However, the few independent studies that I could find comparing conventional vs. aspheric lenses told a different story. Most people who had a different type lens in each eye couldn't tell the difference. And among those who claimed they could perceive a difference in their vision, more people preferred the conventional lens! I've heard that aspheric lenses are better at reducing glare, but who knows? Your cataract surgeon will recommend what s/he feels would work best for you.
Do you think you would have found something like -1.0 or -1.5 in both eyes more satisfactory - for more near/intermediate vision?
Do you mind if I ask whether you are finished now with medical procedures for your eyes? Other than really missing monvision for near/intermediate vision, are you doing well with your eyes and your vision? I sure hope so.
Before cataract surgery, I was so nearsighted that I couldn't find my car without contacts/glasses, Now I can actually drive it. I hope you'll be as pleased with the results of your cataract surgery as I am. And your retinal surgery should sharpen your vision considerably.
I found another doctor and he was very kind and felt badly for me as he DX me with Large Posterior Vitreous detachment. He gave me the name of a retina/vitreous doctor and also called him. Hubby and I went there. He confirmed the detachment and felt my frustration and sadness. He offered me surgery and told me to think about it as this could go away in months or a few years. (Second eye doctor said the same thing) I was so out of it in his office that I never asked what he would do. But, I have to say that the second and third eye doctors were God Like. They both treated us well. So unlike the first place that never told me I had this. Just wanted to update you ladies. Thanks for listening. It has been a very stressful month. I had two severe angina attacks over this that landed me in the ER room. I go for a heart cath on Monday. Vision problems can take the best out of a person. Good Luck to both of you.
Having been severely myopic since the age of 9, I have never dreamed of trying to find my car without glasses or contacts! (I probably would have climbed into someone else's car and sat on their lap.) I'm certainly looking forward to acquiring this capability.
My very sincere thanks and best wishes to you, Jodie.
texas2step, I'm glad you are finding better medical advice for your eyes but sorry about your heart problems. Good luck to you too.
I still cannot thread a needle or read clearly. But, I am thankful for Doctor No. 2 and Doctor No. 3. God Bless Them. Have a beautiful Sunday.