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[The currently most common causes of childhood blindness in Kinshasa (d. R. Congo)]
S Knappe1, M Schittkowski, W Schröder
1Universitäts-Augenklinik Rostock, Rostock, Germany. SteffiKN74@gmx.de
Insights
Childhood blindness is a significant issue in developing nations. This study in the Democratic Republic of Congo identified corneal opacity and phthisis bulbi as leading causes, with 60% of cases being preventable.
Area of Science:
- Ophthalmology
- Public Health
- Pediatrics
Context:
- Childhood blindness disproportionately affects developing countries, with limited data on prevalence and causes.
- The Democratic Republic of Congo faces a significant burden of childhood visual impairment.
Purpose:
- To identify the most common causes of blindness in children under 16 in Kinshasa, Democratic Republic of Congo.
- To assess the prevalence of blindness and visual impairment among children attending schools for the blind.
Summary:
- A study of 81 children in Kinshasa revealed that 65.4% were blind and 13.6% visually impaired.
- The primary causes of blindness included corneal opacity/scarring (20.0%), phthisis bulbi (15.2%), and refractive anomalies (11.0%).
- Measles, vitamin A deficiency, trauma, and traditional eye medications are suspected contributors to corneal scarring and phthisis bulbi.
Impact:
- Approximately 60% of childhood blindness cases in this cohort were potentially avoidable.
- Interventions such as surgery for cataracts and preventive measures for corneal opacity, glaucoma, and refractive errors could significantly reduce childhood blindness.
Background:
90 % of blind children live in the developing world. Only limited data are available on the prevalence and causes of blindness.
Purpose And Methods:
In order to identify the commonest causes of childhood blindness in the Democratic Republic of Congo, a study was conducted in 81 children (< 16 years old) attending schools for the blind in the capital city Kinshasa.
Results:
According to WHO criteria, 53 (65.4 %) of the 81 children were classifiable as blind (visual acuity < 3/60), 11 (13.6 %) as visually impaired (visual acuity < 1/18) and 17 (21.0 %) as not impaired. On anatomic and functional classifications the commonest causes of blindness were: corneal opacity/scarring (20.0 %), phthisis bulbi (15.2 %), refractive anomalies (11.0 %), optic nerve atrophy (9.0 %), retinal disorders (7.6 %), glaucoma/buphthalmos (7.6 %), cataract (6.9 %), microphthalmos (3.5 %), vitreous opacity (2.8 %) and aphakia (2.1 %). The aetiology of blindness could not be determined in most of the children. Trauma, measles in conjunction with vitamin A deficiency, and the use of traditional eye medications are presumed to be the commonest causes of corneal opacity/scarring and of resultant phthisis bulbi.
Conclusion:
Childhood blindness would be potentially avoidable in 60 % of cases, either by surgery (for cataract [ 6.9 %]) or by preventive measures (corneal opacity/scarring, phthisis bulbi, glaucoma, refractive anomalies [ 53.0 %]).
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