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Trachoma among the Yanomami Indians.
J S Paula1, N H Medina, A A V Cruz
1Departamento de Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Faculdade de Medicina de Ribeir o Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil.
Summary
Trachoma, a leading cause of preventable blindness, was found in 30.3% of Yanomami Indians in Brazil. This study highlights the need for trachoma control programs in the Amazon rainforest.
Area of Science:
- Ophthalmology
- Public Health
- Epidemiology
Background:
- The Yanomami, an isolated indigenous group in Brazil, have poorly understood eye disease epidemiology.
- Trachoma is a significant cause of preventable blindness globally.
Purpose of the Study:
- To conduct the first trachoma survey among Yanomami Indians in the Brazilian Amazon.
- To determine the prevalence and patterns of trachoma in this population.
Main Methods:
- Ophthalmic examinations were performed on 613 Yanomami individuals across eight villages.
- Trachoma was classified into five grades (follicular, inflammatory intense, cicatricial, trichiasis, corneal opacity).
- Age was categorized into children, adults, and elderly.
Main Results:
- Trachoma was endemic in all surveyed villages, with an overall prevalence of 30.3%.
- Females (37.4%) had a higher prevalence than males (23.9%).
- Inflammatory trachoma was prevalent in children (24.9%), while cicatricial forms increased with age.
Conclusions:
- Endemic trachoma necessitates a control program for the Yanomami population in the Brazilian rainforest.
- Early detection and treatment are crucial for preventing trachoma-related visual impairment.