Evidence map›Paper›PMID 31935241›Full record

ArticlePloS one2020

Accuracy of intraocular lens power calculation formulas using a swept-source optical biometer.

Se Young Kim, Seung Hyun Lee, Na Rae Kim, Hee Seung Chin, Ji Won Jung

Abstract readComparative Study
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

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  5. Modification of the Barrett Universal II formula by the combination of the actual total corneal power and virtual axial length.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Se Young KimDepartment of Ophthalmology and Inha Vision Science Laboratory, Inha University School of Medicine, Incheon, South Korea.
Seung Hyun LeeDepartment of Ophthalmology and Inha Vision Science Laboratory, Inha University School of Medicine, Incheon, South Korea.
Na Rae KimDepartment of Ophthalmology and Inha Vision Science Laboratory, Inha University School of Medicine, Incheon, South Korea.
Hee Seung ChinDepartment of Ophthalmology and Inha Vision Science Laboratory, Inha University School of Medicine, Incheon, South Korea.
Ji Won JungDepartment of Ophthalmology and Inha Vision Science Laboratory, Inha University School of Medicine, Incheon, South Korea.ORCID 0000-0001-6139-3221

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare the accuracy of the five commonly used intraocular lens (IOL) calculation formulas integrated to a swept-source optical biometer, the IOLMaster 700, and evaluate the extent of bias within each formula for different ocular biometric measurements.

methodsThe study included patients undergoing cataract surgery with a ZCB00 IOL implant, using IOLMaster 700 optical biometry. A single eye per patient was included in the final analysis for a total of 324 cases. The SRK/T, Hoffer Q, Haigis, Holladay 2, and Barrett Universal II formulas were evaluated. The correlations between the refractive prediction errors calculated using the five formulas and ocular dimensions such as axial length (AL), anterior chamber depth (ACD), corneal power, and lens thickness (LT) were analyzed.

resultsThere were significant differences in the median absolute error predicted by the five formulas after the adjustment for mean refractive prediction errors to zero (P = 0.038). The Barrett Universal II formula had the lowest median absolute error (0.263) and resulted in a higher percentage of eyes with prediction errors within ±0.50 D, ±0.75 D, and ±1.00 D (all P < 0.050). The refractive errors predicted by only the Barrett formula showed no significant correlation with the ocular dimensions: AL, ACD, corneal power, and LT.

conclusionsOverall, the Barrett Universal II formula, integrated to a swept-source optical biometer had the lowest prediction error and appeared to have the least bias for different ocular biometric measurements for the ZCB00 IOL.

Indexed as

AdultAgedAged, 80 and overAxial Length, EyeBiometryCataract ExtractionCorneaFemaleHumansLens, CrystallineLenses, IntraocularLens Implantation, IntraocularMaleMiddle AgedMyopiaPhacoemulsification

Identifiers

PMID31935241
PMCPMC6959581

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.