Eom IOL Power Calculatorver 1.7
by Eom Y MD, PhD
Patient Name
Patient Code
Laterality
  • Axial Length
    mm
  • K1
    D
  • K2
    D
  • ACD
    mm
  • Target Ref
    D
  • A constant
IOL Power(D)
Refraction(D)

This IOL power calculator was modified and improved from the Algorithmic IOL power calculation formula selection method (Acta Ophthalmol. 2021 Aug 11. DOI: 10.1111/aos.14956). To develop this IOL power calculation formula, four IOL power calculation formulas (SRK/T formula, Holladay 1 formula using Cooke-Modified Axial Length [CMAL] in eyes with AL of <24.0mm and Wang Koch Non Linear Regression [WKNLR] in eyes with AL of ≥24.0 mm [1][2][3], HofferQ formula using CMAL in all eyes [1], Haigis formula in eyes with AL of <25.2mm and with WK adjustment in eyes with AL of ≥25.2 mm[4]) were compared in each biometry subgroup. The most accurate method from combinations of four modified formulas was selected in each biometry subgroup.

If you have any questions while using the Eom IOL power calculator, please e-mail: hippotate@hanmail.net.

Disclaimer: I recommend starting with the A-constant from ULIB or IOLcon.org. The calculator cannot guarantee the accuracy or completeness of the results obtained using the Eom IOL power calculator, as it is user-dependent. Therefore, the user is entirely responsible for their results and clinical outcomes.

References

[1] Cooke DL and Cooke TL. Approximating sum-of-segments axial length from a traditional optical low-coherence reflectometry measurement. J Cataract Refract Surg. 2019;45(3):351-354.
[2] Wang L, Holladay JT, Koch DD. Wang-Koch axial length adjustment for the Holladay 2 formula in long eyes. J Cataract Refract Surg. 2018;44(10):1291-1292.
[3] Erratum. J Cataract Refract Surg. 2019;45(1):117.
[4] Wang L., Shirayama M, Ma XJ, Kohnen T, Koch DD. Optimizing intraocular lens power calculations in eyes with axial lengths above 25.0 mm. J Cataract Refract Surg. 2011;37(11):2018-27.