Evidence map›Paper›PMID 35659643›Full record

ArticleBMC ophthalmology2022

Axial length shortening after orthokeratology and its relationship with myopic control.

Anken Wang, Chenhao Yang, Li Shen, Jiaying Wang, Zhehuan Zhang, Weiming Yang

Abstract read
In one paragraph

Article in BMC ophthalmology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

  1. Trial
  2. Early Axial Length Response Predicts Long-Term Myopia Control in Children Undergoing Orthokeratology.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
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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.

Anken WangDepartment of Ophthalmology, Children's Hospital of Fudan University, Shanghai, China.
Chenhao Yang *Department of Ophthalmology, Children's Hospital of Fudan University, Shanghai, China. ychben@hotmail.com.
Li Shen *Department of Ophthalmology, Children's Hospital of Fudan University, Shanghai, China. pearlee52@hotmail.com.
Jiaying WangDepartment of Ophthalmology, Children's Hospital of Fudan University, Shanghai, China.
Zhehuan ZhangDepartment of Ophthalmology, Children's Hospital of Fudan University, Shanghai, China.
Weiming YangDepartment of Ophthalmology, Children's Hospital of Fudan University, Shanghai, China.

Funding

Shanghai Shen Kang Hospital Development Center SHDC2020CR1043B-002
6 · The paper itself

Abstract

purposeTo determine the pattern of axial variation in subjects with initial shortened axial length during the entire period of orthokeratology and to discuss the possibility of shortened AL after one month of orthokeratology becoming a predictor of myopia control.

methodThis study retrospectively included 106 children with myopia aged 8 to 14 wearing OK lenses. Fifty-four eyes with shortened axial length (AL) at the first-month visit were enrolled in the axial length shortening (ALS) group, and fifty-two eyes without shortened AL were enrolled in the no axial length shortening (NALS) group. Axial length and refractive error at baseline and within the entire period of orthokeratology (20 months), including fitting, washout period and re-wear, were measured. Eighty-five children who started wearing single vision spectacle were also included as a control group.

resultsIn the ALS group, AL became longer after shortening and slowly exceeded baseline; afterward, AL experienced a rebound during the washout period and shortened again if OK lenses were re-worn. After washout period, significant difference in AL (ALS:0.28 ± 0.19 mm, NALS: 0.52 ± 0.17 mm) and spherical equivalent (ALS:-0.43 ± 0.44D, NALS:-0.91 ± 0.40D) between the two groups were found(P<0.05). The changes in AL and SE were both significantly correlated with the changes in AL at the first-month visit (P<0.05).

conclusionAfter AL is shortened in the initial stage of orthokeratology, it will experience a rapid rebound during the washout period, and the shortening can reappear when re-wearing OK lenses. Hence, the evaluation of orthokeratology will be more objective and accurate after the wash-out period. In addition, the existence and degree of axial shortening can be used as a predictor of long-term myopia development.

Indexed as

Contact LensesMyopiaOrthokeratologic ProceduresAxial Length, EyeChildHumansRefraction, OcularRetrospective StudiesAxial lengthMyopiaMyopia controlOrthokeratology

Identifiers

PMID35659643
PMCPMC9164339

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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.