Blindness in Western Rwanda: A Study After Conflict
Author Information
Author(s): Mathenge Wanjiku, Nkurikiye John, Limburg Hans, Kuper Hannah
Primary Institution: Rift Valley Provincial Hospital, Nakuru, Kenya
Hypothesis
What is the magnitude and causes of visual impairment in people aged 50 years or older in the postconflict area of Western Rwanda?
Conclusion
The prevalence of blindness and visual impairment in this postconflict area in the Western Province of Rwanda was far lower than expected, but most cases remain avoidable.
Supporting Evidence
- The unadjusted prevalence of bilateral blindness was found to be 1.8%.
- 80% of blindness cases were avoidable.
- Cataract was the leading cause of blindness, accounting for 65% of cases.
- The response rate for the survey was 98.0%.
Takeaway
In Western Rwanda, fewer older people are blind than we thought, and most of the blindness can be prevented with better eye care.
Methodology
The study used a Rapid Assessment of Avoidable Blindness (RAAB) method, surveying clusters of people aged 50 and older to assess visual impairment.
Potential Biases
Potential bias in sampling due to not all eligible individuals being examined within selected clusters.
Limitations
The study does not estimate blindness in those under 50 years old and may have sampling biases due to the cluster size limitation.
Participant Demographics
Participants were individuals aged 50 years and older from the Western Province of Rwanda.
Statistical Information
P-Value
0.001
Confidence Interval
95% CI 1.2%–2.4%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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