Convergence insufficiency in Chinese high school students.
Accommodation, Ocular
/ physiology
Adolescent
China
/ epidemiology
Convergence, Ocular
/ physiology
Cross-Sectional Studies
Female
Humans
Incidence
Male
Ocular Motility Disorders
/ epidemiology
Prospective Studies
Schools
/ statistics & numerical data
Students
/ statistics & numerical data
Vision, Binocular
/ physiology
Chinese
asthenopia
binocular vision
convergence insufficiency
exophoria
vergence
Journal
Clinical & experimental optometry
ISSN: 1444-0938
Titre abrégé: Clin Exp Optom
Pays: United States
ID NLM: 8703442
Informations de publication
Date de publication:
03 2019
03 2019
Historique:
received:
14
11
2017
revised:
22
07
2018
accepted:
20
08
2018
pubmed:
13
9
2018
medline:
1
4
2020
entrez:
13
9
2018
Statut:
ppublish
Résumé
The frequency of convergence insufficiency was determined in a sample of Chinese high school students. The associations between the frequency of convergence insufficiency, gender, refractive error and accommodative insufficiency were investigated. This was a single-site, prospective cross-sectional study. In total, 928 eligible teenagers (mean age 15.9 ± 0.8) from a local high school in Guangzhou, Guangdong Province, China participated in this study. Refraction and binocular vision tests were performed on all eligible participants. The following three signs were used to classify participants: sign 1, exophoria at near at least 4 The number and frequency of individuals with 3-Sign, 2-Sign, and 1-Sign convergence insufficiency as well as no convergence insufficiency group were 25 (2.7 per cent), 119 (12.8 per cent), 303 (32.6 per cent) and 481 (51.8 per cent), respectively. Gender (χ Compared to the data from school- and clinic-based populations in the USA and South Africa, the data from this sample of Chinese high school students showed a lower frequency of 3-Sign convergence insufficiency (2.7 per cent). Convergence insufficiency was associated with refractive error, gender and accommodative insufficiency.
Sections du résumé
BACKGROUND
The frequency of convergence insufficiency was determined in a sample of Chinese high school students. The associations between the frequency of convergence insufficiency, gender, refractive error and accommodative insufficiency were investigated.
METHODS
This was a single-site, prospective cross-sectional study. In total, 928 eligible teenagers (mean age 15.9 ± 0.8) from a local high school in Guangzhou, Guangdong Province, China participated in this study. Refraction and binocular vision tests were performed on all eligible participants. The following three signs were used to classify participants: sign 1, exophoria at near at least 4
RESULTS
The number and frequency of individuals with 3-Sign, 2-Sign, and 1-Sign convergence insufficiency as well as no convergence insufficiency group were 25 (2.7 per cent), 119 (12.8 per cent), 303 (32.6 per cent) and 481 (51.8 per cent), respectively. Gender (χ
CONCLUSION
Compared to the data from school- and clinic-based populations in the USA and South Africa, the data from this sample of Chinese high school students showed a lower frequency of 3-Sign convergence insufficiency (2.7 per cent). Convergence insufficiency was associated with refractive error, gender and accommodative insufficiency.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
166-171Informations de copyright
© 2018 Optometry Australia.