Which IOL is preferred for cataract surgery after previous RK?

which iol is preferred for cataract surgery after previous rk

Sumary of Which IOL is preferred for cataract surgery after previous RK?:

  • November 17, 2021 4 min read Source/Disclosures Published by: Disclosures: Allen reports being a consultant for Alcon and a shareholder in RxSight.
  • Lisa K. Feulner His corrected vision was 20/20 in the right eye and 20/20 with 1 D of astigmatism in the left eye with significant glare to 20/50 in both eyes.
  • Due to his higher-order aberrations and irregular cornea, he was not a good candidate for presbyopic lenses.
  • Figure 1. OPD-Scan III of the axial topography of the left eye showing regular central astigmatism with distortion of the placido ring.
  • Source: Lisa K. Feulner, MD, PhD Figure 2. OPD-Scan III of the axial topography of the right eye showing regular central astigmatism with distortion of the placido ring.
  • This helps to prevent a hyperopic overcorrection which can occur more frequently in these patients where we typically overestimate the central keratometric measurements.
  • As long as there is reproducible astigmatism with a well-defined axis on multiple modalities of testing, we can treat the astigmatism while targeting low myopia on the first eye, using intraoperative guidance or aberommetry to help achieve a consistent astigmatic correction.
  • With this strategy, I have found we can reliably debulk their astigmatism, in most cases leaving them with 0.75 D or less.

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