Evidence map›Paper›PMID 33549081›Full record

Trial reportBMC ophthalmology2021

A randomized trial evaluating efficacy of overminus lenses combined with prism in the children with intermittent exotropia.

Yuelan Feng, Jingjing Jiang, Xueqing Bai, Hui Li, Ningdong Li

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in BMC ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 2 pooled it
–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

3 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Review
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.

Yuelan FengDepartment of Ophthalmology, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China.
Jingjing JiangDepartment of Ophthalmology, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China.
Xueqing BaiDepartment of Ophthalmology, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China.
Hui LiDepartment of Ophthalmology, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China.
Ningdong LiDepartment of Ophthalmology, National Center for Children's Health, Beijing Children's Hospital, Capital Medical University, Beijing, China. lnd30@163.com.

Funding

National Natural Science Foundation of China 81170884National Natural Science Foundation of China 81670883
6 · The paper itself

Abstract

backgroundTo evaluate the efficacy of overminus lenses combined with prism spectacles in children of 3 to 6 years of age with intermittent exotropia (IXT).

methodsSixty patients with IXT were randomly assigned to the treatment and observation groups. Each group included 30 IXT children aged 3 to 6 years. The treatment group was prescribed overminus lenses of - 2.50 D incorporated with the 2 PD base-in prisms on each side. Ocular alignment, the status of binocular vision, as well as the refraction changes were carried out and followed at 1, 3, 6, and 12 months. A revised form of the Newcastle Control Score (NCS) was used to evaluate the patients' ability to control their IXT.

resultsAfter 12 months, the mean refractive error was 1.42 ± 1.25 D, and 1.43 ± 1.12 D for the observation and the treatment group, respectively (95% CI: - 0.61 to 0.62)); the mean exotropia control score was 5.72 ± 1.28 and 1.75 ± 1.18 in the observation and the treatment group, respectively (95% CI: - 4.63 to - 3.33); the mean near stereoacuity was 2.16 ± 0.42 log arcsec and 1.91 ± 0.26 log arcsec in the observation and the treatment group, respectively (95% CI: - 0.44 to - 0.06).

conclusionsIn our randomized clinical trial, overminus spectacles with prism significantly improved the control of IXT and stereopsis, by reducing the angle of strabismus in children with IXT. This treatment does not appear to cause myopia, at least in the manner used this series. A further randomized trial is warranted to assess the effect of overminus spectacles with prism after the treatment has been discontinued.

trial registrationThis study adheres to CONSORT 2010 guidelines. Chinese Clinical Trial Registry, ChiCTR1900025243 . Registered 17 August 2019.

Indexed as

ExotropiaChildChild, PreschoolEyeglassesHumansRefraction, OcularVision, BinocularVisual AcuityIntermittent exotropiaOverminus lensesPrism

Identifiers

PMID33549081
PMCPMC7866701

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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.