Evidence map›Paper›PMID 28983803›Full record

ArticleJapanese journal of ophthalmology2017

Evaluating internal and ocular residual astigmatism in Chinese myopic children.

Yanlin Liu, Yong Cheng, Yue Zhang, Lu Zhang, Mingwei Zhao, Kai Wang

Abstract read
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In one paragraph

Article in Japanese journal of ophthalmology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.0field-weighted citation impact, top 22% of its field
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

12 citing papers in PubMed, 19 citations in OpenAlex.

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  9. Longitudinal change in components of astigmatism and its association with axial length-corneal radius ratio in Chinese young children: the Nanjing Eye Study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2022
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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

6 authors at 3 institutions in 1 country.

Yanlin LiuDepartment of Ophthalmology, Peking University People's Hospital, Beijing, 100044, China.
Yong ChengDepartment of Ophthalmology, Peking University People's Hospital, Beijing, 100044, China.
Yue ZhangGeneral Hospital of the Air Force, Beijing, 100142, China.
Lu ZhangDepartment of Ophthalmology, Peking University People's Hospital, Beijing, 100044, China.
Mingwei ZhaoDepartment of Ophthalmology, Peking University People's Hospital, Beijing, 100044, China.
Kai WangDepartment of Ophthalmology, Peking University People's Hospital, Beijing, 100044, China. wang_kai@263.net.
Peking University · CNAir Force General Hospital PLA · CNPeking University People's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the nature of internal astigmatism (IA) and ocular residual astigmatism (ORA) in Chinese myopic children and to identify factors that may influence IA and ORA.

methodsA total of 206 eyes of 206 myopic children (97 boys and 109 girls; 10.95 ± 2.2 years) were enrolled in this cross sectional study. Total ocular astigmatism (TOA), anterior corneal astigmatism (ACA), posterior corneal astigmatism (PCA) and total corneal astigmatism (TCA) were measured directly using either a Hartmann-Shack wavefront sensor or a Pentacam. IA and ORA were calculated by Fourier vector analyses (the definitions of IA and ORA are: IA = TOA - ACA - PCA, ORA = TOA - ACA). Spearman or Pearson correlation was adopted to detect multiple factors that may influence IA and ORA, which were then predicted by linear regressions. Modified compensation factors were applied to evaluate the inter-relationship between corneal astigmatism and ORA.

resultsWhile the mean values of IA and ORA were -0.52 DC × 94.8° and -0.63 DC × 93.0°, respectively, the percentage of ORA power over 1.00 D was as high as 28.64%. Full or under-compensation of ACA by ORA predominated in the enrolled subjects. The mean ORA J

conclusionsFull or under-compensation of ACA by ORA is common in Chinese myopic children, and the compensation efficiency may decrease with age. Among Chinese children with myopia, a larger ORA is more prevalent with less myopia and greater corneal astigmatism.

Indexed as

AdolescentAstigmatismChildChinaCorneaCorneal TopographyCross-Sectional StudiesFemaleHumansMaleMyopiaPrevalenceRefraction, OcularRetrospective StudiesVisual AcuityChildrenInternal astigmatismMyopiaOcular residual astigmatism

Identifiers

PMID28983803
OpenAlexW2763767347

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

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.