Prevalence of astigmatism among students in northern Greece.

Purpose: To assess the prevalence of astigmatism in a sample of 1738 students (15-18 years old) from Northern Greece.

Methods: Collection of the sample was based on a questionnaire method. Statistical analysis included estimation of the prevalence of astigmatism and the distribution of students according to their cylindrical values.

Prevalence of myopia in a sample of Greek students.

Purpose: An epidemiological study, concerning the prevalence of myopia among the student population (15-18 years old) of Northern Greece, was carried out.

Methods: Specific questionnaires were used in order to collect data on the refractive condition of students.

Results: Myopia prevalence was 36.