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Intraocular lens power calculation using adjusted corneal power in eyes with prior myopic laser vision correction

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Abstract

Purpose

To evaluate the prediction accuracy of the intraocular lens (IOL) power calculation using adjusted corneal power according to the posterior/anterior corneal curvature radii ratio in the Haigis formula (Haigis-E) in patients with a history of prior myopic laser vision correction.

Methods

Seventy eyes from 70 cataract patients who underwent cataract surgery and had a history of myopic laser vision correction were enrolled. The adjusted corneal power obtained with conventional keratometry (K) was calculated using the posterior/anterior corneal curvature radii ratio measured by a single Scheimpflug camera. In eyes longer than 25.0 mm, half of the Wang-Koch (WK) adjustment was applied. The median absolute error (MedAE) and the percentage of eyes that achieved a postoperative refractive prediction error within ± 0.50 diopters (D) based on the Haigis-E method was compared with those in the Shammas, Haigis-L, and Barrett True-K no-history methods.

Results

The MedAE predicted using the Haigis-E (0.33 D) was significantly smaller than that obtained using the Shammas (0.44 D), Haigis-L (0.43 D), and Barrett True-K (0.44 D) methods (P < 0.001, P = 0.001, and P = 0.014, respectively). The percentage of eyes within ± 0.50 D of refractive prediction error using the Haigis-E (78.6%) was significantly greater than that produced using the Shammas (57.1%), Haigis-L (58.6%), and Barrett True-K (61.4%) methods (P = 0.025).

Conclusion

IOL power calculation using the adjusted corneal power according to the posterior/anterior corneal curvature radii ratio and modified WK adjustment in the Haigis formula could improve the refraction prediction accuracy after cataract surgery in eyes with prior myopic laser vision correction.

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Funding

This research was supported by Korea University Ansan Hospital Grant; by Korea University Grant; by the TRC Research Grant of the Korea University Medicine and Korea Institute of Science and Technology; by the Korea Medical Device Development Fund grant funded by the Korea government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: 9991007583, KMDF_PR_20200901_0296); and by Korea Environment Industry & Technology Institute (KEITI) through Technology Development Project for Safety Management of Household Chemical Products, funded by Korea Ministry of Environment (MOE) (2020002960007, NTIS-1485017184). The funding source had no role in the design or conduct of this research.

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Authors and Affiliations

  1. Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea

    Jungah Huh, Youngsub Eom, Eun Gyu Yoon, Jong Suk Song & Hyo Myung Kim

  2. Department of Ophthalmology, Korea University Guro Hospital, Seoul, Republic of Korea

    Jungah Huh & Jong Suk Song

  3. Department of Ophthalmology, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea

    Youngsub Eom & Eun Gyu Yoon

  4. Joeunnun Vision Clinic, Seoul, Republic of Korea

    Jun-Heon Kim

Authors
  1. Jungah Huh
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  2. Youngsub Eom
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  3. Eun Gyu Yoon
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Corresponding author

Correspondence to Youngsub Eom.

Ethics declarations

Ethics approval and consent to participate

All procedures performed in studies involving human participants were in accordance with the ethical standards of the Public Institutional Bioethics Committee (no. P01-202001–21-004) and the Institutional Review Board of Korea University Ansan Hospital (IRB no. 2019AS0213) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. According to the IRB standard operating procedures on retrospective clinical study, the Ethics Committee ruled that subject consent was not required for this study.

Conflict of interest

All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements) or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript.

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Huh, J., Eom, Y., Yoon, E.G. et al. Intraocular lens power calculation using adjusted corneal power in eyes with prior myopic laser vision correction. Graefes Arch Clin Exp Ophthalmol 259, 3729–3737 (2021). https://doi.org/10.1007/s00417-021-05309-7

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  • DOI: https://doi.org/10.1007/s00417-021-05309-7

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