Evidence map›Paper›PMID 39930429›Full record

ArticleBMC ophthalmology2025

Tomographic characteristics of thick corneas.

Junjie Yu, Ye Xu, Xiaoying Wang, Yishan Qian

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Observational
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

4 authors.

Junjie Yu *Department of Ophthalmology, Eye and ENT Hospital, Fudan University, No. 83, Fenyang Rd, Xuhui Dist, Shanghai, People's Republic of China.
Ye Xu *Department of Ophthalmology, Eye and ENT Hospital, Fudan University, No. 83, Fenyang Rd, Xuhui Dist, Shanghai, People's Republic of China.
Xiaoying WangDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, No. 83, Fenyang Rd, Xuhui Dist, Shanghai, People's Republic of China.
Yishan QianDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, No. 83, Fenyang Rd, Xuhui Dist, Shanghai, People's Republic of China. 13917852240@163.com.

Funding

Natural Science Foundation of Minhang District, Shanghai, China 2023MHZ066Research Project Grant of Shanghai Municipal Health Commission 202340220the Grant of China Disabled Persons' Federation 2022CDPFAT-03
6 · The paper itself

Abstract

purposeTo investigate the tomographic characteristics of corneas with excessive thickness and to explore their potential impact on the assessment of candidates for refractive surgery.

methodsOne hundred and two eyes from 102 patients with the thinnest pachymetry (TP) < 500 μm, 100 eyes from 100 patients with TP ranging from 500 to 580 μm, and 102 eyes from 102 subjects with TP ≥ 580 μm were included. Pentacam ectasia indices were compared among these different groups.

resultsWhen compared to eyes with TP between 500 and 580 μm, significantly higher values in anterior radius of curvature (ARC), anterior corneal astigmatism (KAp), back elevation at the thinnest pachymetry (BE), deviation of normality of the back elevation (Db), and a more negative Q value for the back surface (Qback) were observed in eyes with TP ≥ 580 μm (Mann-Whitney U test: P < 0.001). No significant differences were observed in the indices for the anterior cornea (Mann-Whitney U test: index of height decentration, P = 0.348; inferior-superior value, P = 0.334; keratoconus percentage index, P = 0.077; deviation of normality of the front elevation, P = 0.891). The proportion of abnormalities was highest in eyes with TP ≥ 580 μm for BE (16.7%, Chi-square test: P < 0.001) and Db (20.6%, Chi-square test: P = 0.001).

conclusionsThe tomography of thick corneas reveals greater BE and Db, as well as a more negative Qback while no significant disparities emerged in the anterior corneal indices.

Indexed as

CorneaCorneal TopographyKeratoconusAdolescentAdultAstigmatismCorneal PachymetryFemaleHumansMaleMiddle AgedRetrospective StudiesYoung AdultAsphericityCorneal thicknessForme fruste keratoconusTomography

Identifiers

PMID39930429
PMCPMC11808941

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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.