Evidence map›Paper›PMID 39731587›Full record

ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2025

Comparison of two strategies estimating surgically induced astigmatism in position prediction of toric IOLs in 2.2 mm cataract surgery.

Houyi Liu, Maierdanjiang Ainiwaer, Yingying Hong, Yang Sun, Binghe Xiao, Yinghong Ji

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Houyi LiuEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, No. 83 Fenyang Road, Shanghai, 200031, China.
Maierdanjiang AiniwaerEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, No. 83 Fenyang Road, Shanghai, 200031, China.
Yingying HongEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, No. 83 Fenyang Road, Shanghai, 200031, China.
Yang SunEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, No. 83 Fenyang Road, Shanghai, 200031, China.
Binghe XiaoEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, No. 83 Fenyang Road, Shanghai, 200031, China.
Yinghong JiEye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, No. 83 Fenyang Road, Shanghai, 200031, China. jiyh_eent@163.com.ORCID http://orcid.org/0000-0003-3340-5373

Funding

National Natural Science Foundation of China 81770907National Natural Science Foundation of China 82070942
6 · The paper itself

Abstract

purposeTo compare the precision of the arithmetic mean of surgically induced astigmatism (M-SIA) and the centroid of surgically induced astigmatism (C-SIA) in estimating SIA when predicting the power and axis of toric IOLs under different circumstances.

methods120 eyes of 99 patients undergoing toric IOL replacement in a simple cataract surgery were included in the retrospective study. The predicted position of toric IOL was calculated by Z Calc online calculator and Barrett Toric Calculator with M-SIA (0.4D) or C-SIA (0.1D). Position prediction error (PPE, the difference between the predicted position of toric IOL and the ideal position of toric IOL), its absolute value (PPE-Abs) and △PPE (the difference between absolute value of PPE calculated by C-SIA and by M-SIA using the same toric calculator) were used to evaluate the precision in estimate of SIA.

resultsStatistical significance in mean PPE and mean PPE-Abs was found in the group M-Barrett. The orientation of corneal astigmatism and eye laterality were influential to mean PPE while gender was not. △PPE was below 0 in both toric calculators. Significant difference in △PPE was seen between groups with different corneal astigmatism when all eyes were OS, as well as between groups with different eye laterality when all eyes were with WTR astigmatism.

conclusionsWe did not find a significant difference between M-SIA and C-SIA in estimating the SIA of the patients undergoing small-incision cataract surgery combined with toric IOL implantation. M-SIA was not recommended in Barrett Toric Calculator. The orientation of corneal astigmatism and the incision on the cornea should be considered when choosing between M-SIA and C-SIA. KEY MESSAGES: WHAT IS KNOWN? : Either the arithmetic mean of surgically induced astigmatism (M-SIA) or the centroid of surgically induced astigmatism (C-SIA) of a cohort was used to estimate the position of toric IOLs before the surgery. The size and site of corneal incision could influence the orientation and the magnitude of SIA. WHAT IS NEW? : When calculating the axis of toric IOLs with Barrett Toric Calculator, arithmetic mean of SIA (M-SIA) was not recommended for estimate. The orientation of corneal astigmatism could influence the estimate of SIA. We created several novel variables that could be used to indirectly evaluate the stability of toric IOLs and the prognosis of patients.

Indexed as

AstigmatismCataract ExtractionLenses, IntraocularLens Implantation, IntraocularRefraction, OcularVisual AcuityAgedAged, 80 and overFemaleFollow-Up StudiesHumansMaleMiddle AgedProsthesis DesignRetrospective StudiesRotationSurgically induced astigmatismToric calculatorToric IOL

Identifiers

PMID39731587

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