Accuracy of 10 Intraocular Lens Power Calculation Formulas
https://doi.org/10.18008/1816-5095-2025-1-29-34
Abstract
Purpose: to access accuracy of 10 intraocular lens (IOL) calculation formulas.
Patients and methods. 784 patients (784 eyes) formed study group. Every patient underwent phacoemulsification (PE) with IOL implantation. Biometry for IOL calculation was performed on IOL-Master 500 and 700 (Carl Zeiss, Germany). 1 month after PE spherical equivalent of refraction (Topcon-8800, Japan) was assessed. To compare refractive results of formulas, mean calculation error (ME), mean absolute calculation error (MAE) and formula performance index (FPI) were assessed.
Results. The following formulas are presented in descending order of the FPI: Kane (10.20), Hill RBF (10.00), Barrett (9.62), Holladay I (9.52), Hoffer QST (9.26), Ladas Super Formula (9.17), EVO (9.09), Hoffer Q (8.40), SRK/T (8.13), Pearl DGS (8.00). The lowest MAE shows Kane formula (0.33 ± 0.25), Hill RBF (0.33 ± 0.24) and Barrett (0.34 ± 0.25). The greatest MAE — SRK/T (0.36 ± 0.27), Hoffer Q (0.36 ± 0.25) and Pearl DGS (0.39 ± 0.37).
Conclusion. The highest accuracy was demonstrated by Kane, Hill RBF and Barrett formulas, however, other formulas (SRK/T, Holladay I, Hoffer Q, Ladas Super Formula, EVO, Hoffer QST, Pearl DGS) demonstrate comparable results with the above.
About the Authors
D. F. Belov
Saint-Petersburg Multifield Hospital No. 2; Saint Petersburg State University
Russian Federation
Russian Federation
Belov Dmitrii F., PhD, chief of ophthalmological department № 1, assistant performing medical work
Uchebniy lane, 5, Saint-Petersburg, 194354
University emb., 7/9, Saint-Petersburg, 199034
V. P. Nikolaenko
Saint-Petersburg Multifield Hospital No. 2; Saint Petersburg State University
Russian Federation
Russian Federation
Nikolaenko Vadim P., MD, deputy chief physician of Ophthalmology, Professor of the Otorhinolaryngology and Ophthalmology Department
Uchebniy lane, 5, Saint-Petersburg, 194354
University emb., 7/9, Saint-Petersburg, 199034
D. E. Dmitrieva
Saint Petersburg State University
Russian Federation
Russian Federation
Dmitrieva Darya D., student
University emb., 7/9, Saint-Petersburg, 199034
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Review
For citations:
Belov D.F., Nikolaenko V.P., Dmitrieva D.E. Accuracy of 10 Intraocular Lens Power Calculation Formulas. Ophthalmology in Russia. 2025;22(1):29-34. (In Russ.) https://doi.org/10.18008/1816-5095-2025-1-29-34
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