Outcomes of the Haigis-L formula for calculating intraocular lens power in Asian eyes after refractive surgery

Wong, Chee Wai; Yuen, Leonard; Tseng, Peter; Han, Daphne

doi:10.1016/j.jcrs.2014.06.034

Cited by 25 publications

(23 citation statements)

References 27 publications

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“…Then, a number of regression formulas-Shammas-PL [5] which uses data available at the time of cataract surgery to predict the post refractive surgery keratometry and W-K-M [13] method which convert anterior corneal power from Atlas topographyare described in different articles. Haigis-L uses linear regression to optimize the estimate of corneal power from standard keratometry [6], which is the most popular method for IOL power calculation after refractive surgery, especially for Asian and German [25,26]. Unlike double-K method, the Shammas-PL and Haigis-L determine the ELP without the central corneal power data.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of intraocular lens power calculation formulas after laser refractive surgery in myopic eyes: A meta-analysis

Song³

2019

Preprint

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Background: To compare the accuracy of intraocular lens power calculation formulas after refractive surgery in myopic eyes. Methods: We searched the databases on the PubMed, EMBASE, Web of science and Cochrane library to select relevant studies published between Jan 1, 2009 and Aug 11, 2019. Primary outcomes were the percentages of refractive prediction error within ±0.5D and ±1.0D. Results: The results of this meta-analysis were investigated from 16 studies, including 7 common methods (Haigis-L, Shammas-PL, Double-K SRK/T, Barrett true K no history, Wang-Koch-Maloney, ASCRS average and OCT formula). ASCRS average yielded significantly higher percentage of refractive prediction error within ±0.5D than Haigis-L, Shammas-PL and W-K-M (P=0.009, 0.01, 0.008, respectively). Barrett true K no history also yielded significantly higher percentage of refractive prediction error within ±0.5D than Shammas-PL and W-K-M (P=0.01, <0.0001, respectively), and the same result was found by comparing OCT formula with Hiaigi-L and Shammas-PL (P=0.03, 0.01, respectively). Only the Haigis-L had significantly higher percentages than W-K-M method in the ±1.0D group (P = 0.04). Conclusion: We suggest that the ASCRS average and Barrett true K no history formula should be used to calculate the IOL power in eyes after myopic refractive surgery.

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Section: Discussionmentioning

confidence: 99%

Accuracy of intraocular lens power calculation formulas after laser refractive surgery in myopic eyes: A meta-analysis

Song³

2019

Preprint

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“…In Wong’s study, the Asian eyes with previous myopic LASIK or photorefractive keratectomy (PRK) had cataract surgeries with IOL power calculated by 4 formulas. Haigis-L formula turned out to have the highest percentage of cases that achieved the refraction of targeted SE ±0.50 D and SE ±1.00 D [ 14 ]. A meta-analysis by Chen et al also concluded that the clinical inquiry was inaccurate in predicting postoperative refraction as compared to the Haigis-L formula [ 15 ].…”

Section: Discussionmentioning

confidence: 99%

Femtosecond laser-assisted cataract surgery with implantation of a diffractive trifocal intraocular lens after laser in situ keratomileusis: a case report

Wang¹,

Ni²,

Li³

et al. 2018

BMC Ophthalmol

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BackgroundWe report for the first time, a case of femtosecond laser-assisted cataract surgery (FLACS) with implantation of a diffractive trifocal intraocular lens (IOL) after laser in situ keratomileusis (LASIK).Case presentationA 60-year-old man underwent FLACS uneventfully 15 years after myopic LASIK. An AT Lisa tri 839MP IOL was implanted with the expectation of spectacle independence. The Haigis-L formula was chosen for calculation of the IOL power and it provided reliable results. Three months postoperatively, the uncorrected visual acuities were 0.00 logMAR for distance, 0.10 logMAR for intermediate, and 0.10 logMAR for near.ConclusionsThis case suggested that FLACS presents a feasible surgical technique for post-LASIK eyes and that implantation of trifocal IOL can achieve good visual performance in strictly selected cases after myopic LASIK.

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“…Refractive outcomes of Haigis-L formula for calculation intraocular lens power in Asian eyes with axial lengths longer than 25.0 mm that had a previous myopic laser in situ keratomileusis or photorefractive keratectomy are evaluated in (Wong et al, 2015). The predictability of being within ±0.5 D and ±1.0 D of the target was 35.7 % and 63.1 %, respectively.…”

Section: Calculation Of Intra-ocular Lens For Non-normal Eyesmentioning

confidence: 99%

Arti?cial Neural Networks Application in Intraocular Lens Power Calculation

Sramka

Vlachynska

2018

Linköping Electronic Conference Proceedings

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This article deals with intra-ocular lens (IOL) power calculations during the cataract surgery. At present, IOL power calculated by formulas is usually able to provide acceptable results for the majority of the patients. The problem appears when any of input parameters have the value which is not normal in population distribution. Then the patient post-operative refraction result can inconsiderable deviate from intended target. This work describes approach how to preoperatively indicate which samples of a patient could be problematic in accurate IOL calculations by classification of Artificial Neural Networks (ANN). Small and long eyes are used to test the ability of ANN to classify input samples which are taken from pre-operative measurements to several groups which represent probable post-operative result. In our experiment, ANN classifies samples into two groups. The first group is for data samples with a probable result in positive ranges of diopter and second group is for negative ranges. The accuracy of ANN, in this case, is 94.1 %.

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Outcomes of the Haigis-L formula for calculating intraocular lens power in Asian eyes after refractive surgery

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 25 publications

References 27 publications

Accuracy of intraocular lens power calculation formulas after laser refractive surgery in myopic eyes: A meta-analysis

Accuracy of intraocular lens power calculation formulas after laser refractive surgery in myopic eyes: A meta-analysis

Femtosecond laser-assisted cataract surgery with implantation of a diffractive trifocal intraocular lens after laser in situ keratomileusis: a case report

Arti?cial Neural Networks Application in Intraocular Lens Power Calculation

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