Blindness and Visual Impairment in Sokoto State, Nigeria
Author Information
Author(s): Muhammad Nasiru Mansur, Rabiu M., Dantani Adamu M., Elhassan Elizabeth, Isiyaku Sunday
Primary Institution: College of Heath Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
Hypothesis
To estimate the prevalence of low vision and blindness, identify the causes, and suggest policies for an effective eye care program based on 2005 data from Sokoto State, Nigeria.
Conclusion
The prevalence of blindness in Sokoto State is high yet the main causes are largely avoidable.
Supporting Evidence
- The prevalence of bilateral blindness was 1.9%, with cataract being the leading cause.
- The prevalence of low vision was 9.1%.
- The major barrier to cataract and glaucoma management was cost.
Takeaway
This study found that many people in Sokoto State, Nigeria, are blind or have low vision, but most of the causes can be treated or prevented.
Methodology
A population-based cross-sectional survey using a stratified two-stage cluster sampling method was conducted.
Potential Biases
Potential bias due to refusal of examination primarily by females, influenced by cultural factors.
Limitations
The study may have an over-representation of males due to higher refusal rates among females.
Participant Demographics
The study included individuals of all ages from Sokoto State, Nigeria, with a response rate of 91%.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI: 1.5–2.3%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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