Related Experiment Video
Updated: Aug 11, 2026

Using an Automated Hirschberg Test App to Evaluate Ocular Alignment
Published on: March 24, 2020
Childhood blindness in India: a population based perspective
1Centre for Social Services, Administrative Staff College of India, Hyderabad, India. rakhi@asci.org.in
Insights
Childhood blindness affects 0.17% of children in Andhra Pradesh, India. Leading causes include refractive errors and preventable conditions like vitamin A deficiency, highlighting the need for targeted interventions.
Area of Science:
- Ophthalmology
- Public Health
- Pediatrics
Background:
- Childhood blindness presents a significant public health challenge globally.
- Understanding the specific causes and prevalence is crucial for effective intervention strategies.
Purpose of the Study:
- To determine the prevalence of blindness in children under 15 years of age.
- To identify the primary causes of childhood blindness in Andhra Pradesh, India.
Main Methods:
- Population-based studies involving 6,935 children aged 15 or younger.
- Definition of blindness: presenting distance visual acuity less than 6/60 in the better eye.
Main Results:
- The prevalence of childhood blindness was found to be 0.17%.
- Treatable refractive error was the leading cause (33.3%).
- Preventable causes (vitamin A deficiency, post-cataract surgery amblyopia) and congenital anomalies/retinal degeneration each accounted for 16.7%.
Conclusions:
- Key areas for intervention to reduce childhood blindness in India include refractive errors, cataract-related amblyopia, and corneal diseases.
- These findings align with the goals of Vision 2020 for preventing avoidable blindness.
Aim:
To estimate the prevalence and causes of blindness in children in the southern Indian state of Andhra Pradesh.
Methods:
These data were obtained as part of two population based studies in which 6935 children
Results:
The prevalence of childhood blindness was 0.17% (95% confidence interval 0.09 to 0.30). Treatable refractive error caused 33.3% of the blindness, followed by 16.6% due to preventable causes (8.3% each due to vitamin A deficiency and amblyopia after cataract surgery). The major causes of the remaining blindness included congenital eye anomalies (16.7%) and retinal degeneration (16.7%).
Conclusion:
In the context of Vision 2020, the priorities for action to reduce childhood blindness in India are refractive error, cataract related amblyopia, and corneal diseases.
More Related Videos
Related Concept Videos
Blinding
Photoreceptors and Visual Pathways
Bias in Epidemiological Studies

