Evidence map›Paper›PMID 33446145›Full record

ArticleBMC ophthalmology2021

A retrospective survey of strabismus surgery in a tertiary eye center in northern China, 2014-2019.

Xiaomei Wan, Luqin Wan, Mingming Jiang, Yichao Ding, Yuan Wang, Jing Zhang

Open access · goldAbstract read
In one paragraph

Article in BMC ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 14% 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Observational
  4. Article
  5. Article
  6. Analysis of Strabismus Surgical Outcomes: A Retrospective Study of 2269 Cases from a Single Center.Medical science monitor : international medical journal of experimental and clinical research · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
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.

Xiaomei WanQingdao Eye Hospital of Shandong First Medical University, No. 5 Yan'er Dao Road, Shinan District, 266071, Qingdao, Shandong, China.
Luqin WanState Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University& Shandong Academy of Medical Sciences, No. 5 Yan'er Dao Road, Shinan District, 266071, Qingdao, Shandong, China.
Mingming JiangQingdao Eye Hospital of Shandong First Medical University, No. 5 Yan'er Dao Road, Shinan District, 266071, Qingdao, Shandong, China.
Yichao DingQingdao Eye Hospital of Shandong First Medical University, No. 5 Yan'er Dao Road, Shinan District, 266071, Qingdao, Shandong, China.
Yuan WangQingdao Eye Hospital of Shandong First Medical University, No. 5 Yan'er Dao Road, Shinan District, 266071, Qingdao, Shandong, China.
Jing ZhangQingdao Eye Hospital of Shandong First Medical University, No. 5 Yan'er Dao Road, Shinan District, 266071, Qingdao, Shandong, China. kabbhh@126.com.
Shandong First Medical University · CNShandong Eye Hospital · CNQingdao University · CN

Funding

State Key Laboratory of Architectural Science and Technology in West China 2019Y011
6 · The paper itself

Abstract

backgroundTo evaluate the distribution pattern and changes of strabismus surgery in northern China.

methodsThe records of strabismus patients at Qingdao Eye Hospital from January 2014 to December 2019 were reviewed retrospectively. The characteristics analyzed included gender, regional distribution, constituent ratio of age and type of strabismus. Changes during the periods 2014-2016 and 2017-2019 were compared and analyzed.

resultsA total of 5746 strabismus patients were recruited. The number of strabismus patients was relatively stable each year from 2014 to 2016 but gradually increased each year from 2017 to 2019. Of these, 51.7% (2968/5746) were male, and 48.3% (2778/5746) were female. The majority (89.8%, 5159/5746) of the patients were from Shandong Province. The statistical results of the constituent ratio of age showed that 32.4% (1860/5746) were 7-12 years old (primary school level). Patients under 12 years of age (preschool and primary school level) accounted for 60.0% (3447/5746) of all the patients. In terms of the types of strabismus, exotropia accounted for 63.5% (3650/5746), followed by esotropia and vertical rotational strabismus at 13.2% (758/5746) and 9.7% (555/5746), respectively. Intermittent exotropia was the most common type among the exotropia patients, accounting for 71.3% (2604/3650). Among the patients with intermittent exotropia, 62.5% (1627/2604) were children aged 4-12 years, and the basic type of intermittent exotropia was the main type. Four percent (231/5746) of the patients, of which adult patients comprised the main population, required reoperation.

conclusionsPatients with strabismus at primary school level comprised the largest group of strabismus patients in north China. Exotropia was the most common type of strabismus, and intermittent exotropia was the most common type of exotropia. The rate of exotropia to esotropia was 5:1.

Indexed as

EsotropiaExotropiaStrabismusAdultChildChild, PreschoolChinaFemaleHumansMaleOculomotor MusclesRetrospective Studies

Identifiers

PMID33446145
PMCPMC7809797
OpenAlexW3110984875

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.