• Users Online: 181
  • Home
  • Print this page
  • Email this page
Home Current issue Ahead of print Search About us Abstracting and Indexing Editorial board Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2015  |  Volume : 10  |  Issue : 2  |  Page : 130-138

Prevalence of color vision deficiency and its correlation with amblyopia and refractive errors among primary school children


1 Ophthalmic Epidemiology Research Center, Department of Ophthalmology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences; Basir Eye Safety Research Center, Basir Eye Clinic, Tehran, Iran
3 Basir Eye Safety Research Center, Basir Eye Clinic, Tehran, Iran
4 Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences; Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
5 Department of School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Correspondence Address:
Hamideh Sabbaghi
Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, No. 23, Paidarfard St., Boostan 9 St., Pasdaran Ave., Tehran 16666
Iran
Login to access the Email id

Source of Support: Nil., Conflict of Interest: None


DOI: 10.4103/2008-322X.163778

Rights and Permissions

Purpose: To determine the prevalence of color vision deficiency (CVD) and its correlation with amblyopia and refractive errors among primary school children. Methods: In this population-based cross-sectional study, 2160 children were selected from 36 primary schools; 60 students were from each school (10 students in each grade), with equal sex distribution. A complete eye examination including refraction using a photorefractometer, determination of visual acuity (VA) and color vision using a Yang vision tester, and evaluation of ocular media opacity using a direct ophthalmoscope was performed. Children who could not answer at least 4 plates of the Ishihara color test were considered as color vision deficient subjects. Amblyopia was determined if pinhole VA was worse than 0.3 LogMAR (equal to 20/40). Results: The prevalence of CVD was 2.2% (95% CI: 1.5% to 3%) which was higher in male subjects (37 [3.5%] boys vs. 11 [1.0%] girls, P < 0.001). Mean VA was lower among students with CVD as compared to normal color vision children (P = 0.035) and amblyopia was observed in 8.3% (95% CI: 0.2% to 16.4%) of patients with CVD versus 2.1% (95% CI: 1.5% to 2.08%) of children with normal color vision perception (P = 0.005). A statistically significant correlation between lower VA and CVD was observed (P = 0.023). Conclusion: Although CVD was correlated with lower VA and amblyopia, there was no relationship between CVD and the type of amblyopia, refractive error, anisometropia or strabismus.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed1644    
    Printed11    
    Emailed0    
    PDF Downloaded259    
    Comments [Add]    
    Cited by others 4    

Recommend this journal