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The epidemiology of childhood blindness and severe visual impairment in Indonesia
Mohammad Muhit1,2, Tasneem Karim1,2, Johurul Islam1,2
1Asian Institute of Disability and Development (AIDD), University of South Asia, Dhaka, Bangladesh.
Insights
Childhood blindness is a significant issue in Indonesia, with high rates of blindness and severe visual impairment (BL/SVI) found in Sumba and Yogyakarta. A large majority of these cases are avoidable, highlighting the need for preventative and treatable interventions.
Area of Science:
- Ophthalmology
- Public Health
- Pediatrics
Background:
- The prevalence and causes of childhood blindness in Indonesia were previously unknown.
- Childhood blindness significantly impacts public health and requires urgent investigation.
Purpose of the Study:
- To determine the magnitude and aetiology of childhood blindness in Sumba and Yogyakarta, Indonesia.
- To provide data for developing targeted interventions for childhood visual impairment.
Main Methods:
- A cross-sectional study assessed children aged 0-15 years in Sumba and Yogyakarta.
- WHO protocols were used for ophthalmological assessment and classification of visual impairment and blindness.
- Key informants, special schools, and rehabilitation programs identified study participants.
Main Results:
- Out of 195 children, 113 had blindness/severe visual impairment (BL/SVI).
- The leading causes of BL/SVI were lens (31.0%), retina (11.5%), and cornea (8.0%) issues.
- A significant 77.8% of BL/SVI cases were avoidable (69.0% treatable, 8.8% preventable).
- Estimated prevalence of BL/SVI was 0.25/1000 in Sumba and 0.23/1000 in Yogyakarta.
- An estimated 17,241 children in Indonesia have BL/SVI, with 4,270 blind due to cataract.
Conclusions:
- Childhood blindness and severe visual impairment (BL/SVI) are prevalent in Sumba and Yogyakarta.
- A substantial proportion of childhood BL/SVI in Indonesia is avoidable, emphasizing the potential for prevention and treatment.
Background:
The magnitude of blindness among children in Indonesia is unknown. In this study, we aimed to define the magnitude and aetiology of childhood blindness in two parts of Indonesia.
Method:
Children aged 0-15 years, identified through key informant method and from special schools and community-based rehabilitation programme in Sumba and Yogyakarta, were assessed following WHO protocol and definitions for ophthalmological assessment and classification of visual impairment and blindness among children.
Results:
Out of 195 children assessed, 113 had blindness/severe visual impairment (BL/SVI), 48 had visual impairment (VI) and 34 had no VI. 43.4% children with BL/SVI were female.The main anatomical site of BL/SVI was lens (n=35, 31.0%), followed by retina (n=13, 11.5%) and cornea (n=9, 8.0%). Among the known aetiologies, childhood factors predominated (n=14, 12.4%), followed by hereditary diseases (n=12, 10.6%) where parental consanguinity was found among 33.3% (n=4) of them. Overall, 77.8% (n=88) had avoidable causes of BL/SVI: 69.0% (n=78) treatable and 8.8% (n=10) preventable causes.The estimated prevalence of BL/SVI was 0.25 (95% CI 0.19 to 0.32) and 0.23 (95% CI 0.18 to 0.29) per 1000 children in Sumba and Yogyakarta, respectively. The estimated prevalence of cataract was 0.07 per 1000 children (95% CI 0.04 to 0.12) in Sumba and 0.05 per 1000 children (95% CI 0.03 to 0.09) in Yogyakarta. Based on our conservative estimates, there are 17 241 children with BL/SVI in Indonesia; 4270 are blind due to cataract.
Conclusion:
The magnitude of childhood BL/SVI in Sumba and Yogyakarta is high. Our study suggests that a large proportion of childhood BL/SVI in Indonesia is avoidable.
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