![]() ![]() Sometimes they can't predict that well beforehand since there are actually 2 parts of the cornea that can have astigmatism: the front, anterior, and the back, posterior. That might be what happened in your case. In that case when the natural lens is removed, the counterbalance is gone and you are left with astigmatism from the cornea. Sometimes they have astigmatism in opposite directions that balance each other out so you don't have any noticeable astigmatism that needs to be corrected. In an eye with a natural lens there are actually 2 major sources of astigmatism: the natural lens and the cornea. If your current doctor can't explain them, you might consider getting a 2nd opinion, perhaps from a retinal specialist if that might be an issue.Īstigmatism can be corrected via laser or a blade incision, or of course just with glasses or contacts. I vaguely recall someone may have posted recently about spots that were related to a retinal issue, perhaps they were there before but you just couldn't see them until after your cataract surgery cleared your vision. Sorry to hear about the spots, I don't know what that could be offhand if they aren't floaters. I get enough near vision from my plano eye that I hadn't bothered with a laser tweak for the hyperopic eye, ideally I'd have that eye be slightly myopic, -0.5D to give a bit more near without much impact on distance. In my case one eye was right on target, plano, 0D, while the other was unfortunately left just slightly farsighted, hyperopic, +0.5D, which reduces its near vision a bit. btw, I also have Symfony lenses, and although some descriptions lump them in with multifocals, they are considered to instead be in the new category of "extended depth of focus" lenses. ![]() Its also best to confirm with the surgeon that is what the issue is, vs say the lens being positioned wrong (which seems unlikely) or something else. Any treatment option involves some risk so people tend to try to see first if they adapt, unless the problem is too disruptive of their lives. Its not something that can be predicted unfortunately. In the rare cases where it doesn't go away over time, they sometimes consider a piggyback lens or lens exchange.Įach person is different, the articles by surgeons that I've seen suggest that most see dysphotopsias go away within the first few weeks/months, with a minority taking years, and some never without treatment. It is best to have the doctor try to be sure what the cause is though to make sure that is the issue, rather than say the lenses not being positioned right and needing to be repositioned. The shadow is likely what they refer to as a dysphotopsia (if you wish to google it), which people's brains usually tune out over time so its likely nothing to worry about. If you are myopic, they can either correct it using glasses/contacts or laser correction, or a lens exchange to a better power lens. Unfortunately its likely the case that you were left too myopic. So it is possible your vision will get a bit better. After surgery however it is possible for the lens to shift position a bit during the initial healing process, which can make you more or less myopic, which is why they tend to wait a few weeks before determining whether to prescribe correction. They work well for most people, but they can be off for a minority of patients. Unfortunately there isn't an exact formula for calculating the lens power required, the formulas are merely estimates based on statistics of the eye measurements of past patients and what lens power worked for them. ![]() It sounds as though the lens power may have been off and left you nearsighted, myopic. ![]()
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