Reading, writing, working on a computer or watching television, and myopia

Klin Oczna. 2010;112(10-12):293-5.


Purpose: The aim of our study was to investigate on a large population if reading, writing, working on a computer or watching television might be associated with the occurrence of myopia.

Material and methods: A total of 5865 schoolchildren were examined (2792 boys and 3073 girls, at the age 6-18 years, mean age 11.9, S.D. 3.3). The examination included retinoscopy under cycloplegia induced with 1% tropicamide. Myopia was defined as a spherical equivalent of at least -0.50 dioptres. Mean refractive error was -1.2, SD 1.3. (The students and their parents completed a questionnaire on the child's visual work. Data analysis was performed using independence chi-squared Pearson test; p-values of <0.05 were considered statistically significant.

Results: It was observed that myopia occurs more often in students who read and write >2 hours/day (p<0.001), and also work >0.8 hours/day on a computer (p<0.01). Furthermore, no increase in the prevalence of myopia in subjects who spend >2 hours/day watching television was found (p>0.05).

Conclusions: The obtained results indicate that reading, writing, working on a computer might be associated with the occurrence of myopia among schoolchildren. Watching television is not related to the occurrence of myopia.

MeSH terms

  • Accommodation, Ocular
  • Adolescent
  • Child
  • Child Welfare / statistics & numerical data
  • Computer Terminals
  • Disease Progression
  • Female
  • Humans
  • Male
  • Myopia / diagnosis*
  • Myopia / epidemiology*
  • Poland / epidemiology
  • Prevalence
  • Reading*
  • Risk Factors
  • Television*
  • Writing*