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Shukhaev S.V.

Saint Petersburg branch of the S.N. Fedorov National Medical Research Center «MNTK «Eye Microsurgery»

Boiko E.V.

Saint Petersburg branch of S.N. Fedorov National Medical Research Center “MNTK “Eye Microsurgery”;
North-Western State Medical University named after I.I. Mechnikov

Kudlakhmedov S.S.

North-Western State Medical University named after I.I. Mechnikov

Comparative assessment of the accuracy of toric intraocular lens calculations

Authors:

Shukhaev S.V., Boiko E.V., Kudlakhmedov S.S.

More about the authors

Journal: Russian Annals of Ophthalmology. 2022;138(1): 5‑12

DOI: 10.17116/oftalma20221380115

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Table of contents

To cite this article:

Shukhaev SV, Boiko EV, Kudlakhmedov SS. Comparative assessment of the accuracy of toric intraocular lens calculations. Russian Annals of Ophthalmology. 2022;138(1):5‑12. (In Russ.)
https://doi.org/10.17116/oftalma20221380115

Подписка 2025 (Russian Annals of Ophthalmology)
 
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PURPOSE

To compare the accuracy of toric intraocular lens (IOL) calculations on three modern toric calculators.

MATERIAL AND METHODS

The study comprised 35 eyes of 35 patients who underwent phacoemulsification with toric IOL implantation (EnVista Toric). Residual postoperative refractive astigmatism was calculated on three calculators: EnVista Toric Calculator, ASSORT Toric IOL Calculator and the Kane formula. Prediction error for each calculator was determined using vector analysis.

RESULTS

The mean absolute deviation of predicted postoperative refractive astigmatism over actual astigmatism in diopters was distributed in the following way: 0.82±0.58, 0.70±0.67 and 0.72±0.76 using EnVista Toric Calculator, ASSORT Toric IOL Calculator and the Kane formula, respectively. Centroid prediction error was 0.08 (EnVista Toric Calculator), 0.06 (ASSORT) and 0.10 (Kane formula). There was a significantly smaller deviation using ASSORT and the Kane formula compared to the online calculator (p<0.05).

CONCLUSIONS

Toric calculators ASSORT Toric IOL Calculator and the Kane formula showed higher accuracy of toric IOL calculation than EnVista Toric Calculator.

Keywords:

total corneal astigmatism
posterior corneal astigmatism
toric IOL
vector analysis
cataract surgery

Authors:

Shukhaev S.V.

Saint Petersburg branch of the S.N. Fedorov National Medical Research Center «MNTK «Eye Microsurgery»

Boiko E.V.

Saint Petersburg branch of S.N. Fedorov National Medical Research Center “MNTK “Eye Microsurgery”;
North-Western State Medical University named after I.I. Mechnikov

Kudlakhmedov S.S.

North-Western State Medical University named after I.I. Mechnikov

Received:

30.12.2020

Accepted:

14.05.2021

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