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Concentric ring dysphotopsia in multifocal iol

Posted , 4 users are following.

adlibi
adlibi

I have been implanted multifocal toric iol for 6 months in both eyes. I have concentric rings dysphotopsia. They originate from light sources in low lighting, but are not centered on the light source (like a halo would be). I can have them all over my field of vision at night, all snapping to larger and smaller sizes, all sourcing from a light point and all moving with every moving light source. It's like light reflected on the edges of the optic (rings)

Using pilocarpine or brimonidine it shrinks your pupils temporarily. It works perfectly! The concentric circles disappear completely!. It only lasts a few hours. I'm wondering if the problem is due to the lens edge or lens optic. Please help.

0 likes, 5 replies

5 Replies

  • at201
    at201 adlibi

    Posted

    I have a Symfony lens, which is a little different from the usual multifocal lenses in that it has about 10 circular “diffractive echelette design” in the lens. Many of us using this lens see  about 10 multiple annoying circles around lights at certain distances at night. This is definitely due to the lens design since the number of circles seen around the light correspond to the number of circles in the lens design.

    I just put up with this annoyance.

    My guess is that if my eyes had less contrast capability, the ability to see these circles would go down. May be in your case, using pilocarpine or brimonidine, which shrinks your pupils temporarily, results in reduced contrast capability and less seeing of the concentric circles.

    • adlibi
      adlibi at201

      Posted

      Thanks for your reply. Yes, I can see the concentric rings AROUND light, as you said (sometimes they looks like a spiderweb), but I was talking about a differet annoyange: the light reflect my rings and I can see this reflection around the optic rings. It's actually very hard to explain because usually people think they are the classic rings-halos around the light, I can see rings of various dimension moving up and down on my vision field but when the light comes from up or from the side of my eyes.

    • at201
      at201 adlibi

      Posted

      Yes. The moving of the circles when the light comes from up or side is definitely different from what I see.

      Just as a matter of curiosity, which multifocal toric lenses do you have? And what does your surgeon have to say about this?

    • adlibi
      adlibi at201

      Posted

      At Lisa Zeiss. The surgeon says "it will go away with time"...

  • donna_51780
    donna_51780 adlibi

    Posted

    It's been almost a year since my surgery and I have rings and halos. Night vision is bad! Wanted to have lens replacement. but before I knew what I had,2nd op did YAG so I could not have the lens replaced. Don't let them do YAG. Drops work but don't let your brain adjust to the rings,drops are only a bandaid. I only use them if absolutely necessary. I wanted to find out more about piggyback len but haven't , no one seems to much! I haven't don't it yet. Dr said didn't know if it would even work.

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