About MEAJO | Editorial board | Search | Ahead of print | Current Issue | Archives | Instructions to authors | Online submission | Subscribe | Advertise | Contact | Login 
Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
Users Online: 2260   Home Print this page Email this page Small font sizeDefault font sizeIncrease font size
ORIGINAL ARTICLE
Year : 2012  |  Volume : 19  |  Issue : 4  |  Page : 382-391

Survey of low vision among students attending schools for the blind in Nigeria: A descriptive and interventional study


1 Consultant, Department of Ophthalmology, General Hospital Lagos Island, Lagos State, Nigeria
2 Professor, Department of Ophthalmology, Dean of Clinical Sciences, College of Medicine, University of Ibadan, Nigeria
3 Professor, Department of Ophthalmology, University College Hospital, Ibadan, Nigeria
4 Department of Special Education, Medical Statistics and Environmental Health, University of Ibadan, Oyo State, Nigeria
5 Department of Epidemiology, Medical Statistics and Environmental Health, University of Ibadan, Oyo State, Nigeria

Correspondence Address:
Adedamola L Mosuro
Department of Ophthalmology, General Hospital Lagos Island, Lagos State
Nigeria
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-9233.102744

Rights and Permissions

Purpose: The aim of this study is to determine the prevalence of low vision among students attending all the schools for the blind in Oyo State, Nigeria. The study set out to determine the proportion of students with low vision/severe visual impairment after best correction, to determine the causes of the low vision, to document the associated pathologies, to determine the types of treatment and visual aid devices required, and to provide the visual aids needed to the students in the schools. Materials and Methods: All schools students for the blind in Oyo State were evaluated between August 2007 and January 2008. All the students underwent a thorough ophthalmic examination that included measurement of visual acuity, retinoscopy and subjective refraction, tests for visual aids where indicated, and a structured questionnaire was administered. Results: A total of 86 students were included in the study and the mean age was 19.4 ± 8.19 years. Twenty six (30%) were under 16 years of age. The most common cause of blindness was bilateral measles keratopathy/vitamin A deficiency (VAD) in 25 students (29.1%). The most common site affected was the cornea in 25 students (29.1%), the lens in 23 (26.7%), and the retina/optic nerve in 16 (18.6%). Preventable blindness was mainly from measles keratopathy/VAD (29.1%). Eleven students benefited from refraction and correction with visual aids; two having severe visual impairment (SVI), and nine having visual impairment (VI) after correction. Conclusion: The prevalence of low vision in the schools for the blind in Oyo State is 2.3%, while the prevalence of visual impairment is 10.5%. These results suggest that preventable and treatable ocular conditions are the source of significant childhood blindness in Oyo State.


[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
    Viewed4731    
    Printed278    
    Emailed0    
    PDF Downloaded235    
    Comments [Add]    
    Cited by others 2    

Recommend this journal