Related Experiment Video
Updated: Aug 13, 2026

Visualization of Proprioceptors in Drosophila Larvae and Pupae
Published on: June 13, 2012
Abstract:
A survey of the prevalence of pterygium was performed, and a random proportional sampling was taken of 367 patients in four hospitals in Lima, Peru. An overall incidence of 31.06% was found, with a statistically significant increase in prevalence with regard to age. No statistically significant differences with regard to sex or occupation were found. Although incidence of pterygium was higher in men and in outdoor workers, these factors were not statistically significant.
Insights
Pterygium, a common eye condition, affects over 30% of patients in Lima, Peru. Its prevalence significantly increases with age, but not with sex or occupation.
Area of Science:
- Ophthalmology
- Public Health
- Epidemiology
Background:
- Pterygium is a common ocular surface condition.
- Understanding its prevalence is crucial for public health initiatives.
Purpose of the Study:
- To determine the prevalence of pterygium in Lima, Peru.
- To investigate the association of pterygium with age, sex, and occupation.
Main Methods:
- A survey was conducted on 367 patients across four hospitals in Lima, Peru.
- Random proportional sampling was utilized.
- Data on age, sex, and occupation were collected.
Main Results:
- An overall pterygium prevalence of 31.06% was observed.
- Prevalence significantly increased with advancing age.
- No statistically significant differences were found regarding sex or occupation.
Conclusions:
- Age is a significant risk factor for pterygium.
- While trends suggested higher incidence in males and outdoor workers, these were not statistically significant in this study population.

