Skip to main content
SpringerLink
Log in

Correcting the corneal power measurements after myopic laser In Situ keratomileusis

  • Published:
Journal of Huazhong University of Science and Technology Aims and scope Submit manuscript

Summary

To describe and evaluate a refraction-derived method and a clinically derived method to calculate the correct corneal power for intraocular lens (IOL) power calculations after laser in situ keratomileusis (LASIK) and to compare the results to the commonly used history-derived method. Retrospective analysis were conducted in consecutive case from clinical practice. For each patient, we established the pre-LASIK and post-LASIK spectacle refraction, the pre-LASIK (Kpre) and post-LASIK K readings (Kpost). We then calculated the pre-and post-LASIK refraction at the corneal plane and the amount of correction obtained by the refraction surgery (ΔSEQco). The cases were divided into two groups. Group I was used to derive two formulas. The values obtained with the two methods were compared with the K by history-derived method (Kc.hd) in group II to validate the results. The K values calculated by using the refraction-derived method (Kc.rd) and the K values calculated using the clinically derived method (Kc.cd) correlated highly with Kc.hd. The correct corneal power for intraocular lens (IOL) power calculations after LASIK can use refraction-derived method and clinically derived method instead of history-derived method when some refractive parameters are not available.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Koch D D, Liu J F, Hyde L L et al. Refractive complications of cataract surgery after radial keratometry. Am J Ophthalmol, 1989,108:676–682

    PubMed  CAS  Google Scholar 

  2. Lyle W A, Jin G J. Intraocular lens prediction in patients who undergo cataract surgery following previous radial keratotomy. Arch Opthalmol, 1997,115:457–461.

    CAS  Google Scholar 

  3. Seitz B, Langenbucher A, Nguyen N X et al. Underestimation of intraocular lens keratectomy. Ophthalmology, 1999,106:693–702

    Article  PubMed  CAS  Google Scholar 

  4. Gimel H, Sun R, Kaye GB. Refractive error in cataract surgery after previous refractive surgery. J Cataract Refract Surg, 2000,26:142–144

    Article  Google Scholar 

  5. Lesher M P, Schumer D J, Huker D J et al. Phacoemulsification with intraocular lens implantation after excimer laser photorefrative keratectomy:a case report. J Cataract Refract Surg, 1994,20:265–258

    PubMed  Google Scholar 

  6. Kalaki R S, Danjoux J P, Fraenkel G E et al. Intraocular lens power calculation for catarac surgery after photorefractive keratectomy for high myopia. J Refract Surg, 1997;13: 362–367.

    Google Scholar 

  7. Feiz V, Mannis M J, Garcia-Ferrer F et al. Intraocular lens power calculation after laser in stiu keratomileusis for myopia and hyperopia:a standardized approach. Cornea, 2001;20:792–797

    Article  PubMed  CAS  Google Scholar 

  8. Holladay J T. IOL calculations following radial keratotomy surgery.Questions and answers. Refract Corneal Surg, 1989;5:36

    Google Scholar 

  9. Shammmas H J. Intraocular lens power calculations. Avoiding the errors. Glendale, CA: News Circle, 1996.117–118

    Google Scholar 

  10. Gimbel H V, Sun R. Accuracy and predictability of intraocular lens power calculations after laser in situ keratomileusis. J cataract Refract Surg, 2001,27:571–576

    Article  PubMed  CAS  Google Scholar 

  11. Shammas H J, Maya C. Correcting the corneal power measurements for intraocular lens power calculations after myopic laser in situ keratomileusis. Am J Opthalmol, 2003,136:426–432

    Article  Google Scholar 

  12. Chen W, Xu C C, Wang Q M et al. The relationship between 3-dimensional morphological change and clinical diopter after Lasik. Opthalmol Res, (Chinese), 2002,20:49–52

    Google Scholar 

  13. Shammas H J. Intraocular lens power calculations. In: Azar DT, Intraocular lens in cataract and refractive surgery. Philadelphia: WB Sanders, 2001.60–61

    Google Scholar 

  14. Odebthal M T P, Eggink C A, Melles G et al. Clinical and theoretical results of intraoclar lens power calculation for cataract after photorefractive keratectomy for myopia. Arch Ophthalmol, 2002,120:431–438.

    Google Scholar 

  15. Hamed A M, Wang L, Misra M et al. A comparative analysis of five methods of determining corneal refractive power in eyes that have undergone myopic laser in situ leratotomileusis. Ophthalmology, 2002;109:651–658.

    Article  PubMed  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China

    Liu Lei  (刘磊), Dong Jieyu  (董洁玉) & Li Xinyu  (李新宇)

Authors
  1. Liu Lei  (刘磊)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Dong Jieyu  (董洁玉)
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Li Xinyu  (李新宇)
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

LIU Lei, male, born in 1963, Associate Professor

Rights and permissions

Reprints and permissions

About this article

Cite this article

Liu, L., Dong, J. & Li, X. Correcting the corneal power measurements after myopic laser In Situ keratomileusis. J. Huazhong Univ. Sc. Technol. 26, 472–474 (2006). https://doi.org/10.1007/s11596-006-0425-7

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11596-006-0425-7

Key words

Search

Navigation