The Impact of Computer Use in Myopia Progression: A Cohort Study in Spain

  • Many subjects, especially highly educated subjects, are increasingly exposed to computer use. This exposure might represent an explanation for the growing rates of myopia.

  • The study assessed 17,217 Spanish university graduates from the SUN project, an open-recruitment cohort. Their mean age was 38.5years (SD 12.1), and their mean time of exposure to computers was 14.3h/week (SD 14.6).

  •  It estimated multivariable-adjusted odds ratios (OR) for the risk of myopia development and/or progression (≥0.5 diopters) according to baseline exposure to computer and to changes in exposure.

  • The age and sex-adjusted OR comparing >40h/week of exposure versus<10h/week was 1.34 (95% confidence interval (CI): 1.12–1.60). This association remained essentially unchanged after additional adjustments. Comparing participants who increased their exposure to computers, versus those with no change, the age and sex-adjusted OR was 1.49 (1.34–1.66). This result was unchanged after additional adjustments.

  • Thismay be the first large longitudinal assessment in young adults, showing that exposure to computer use is associated with myopia development or progression in a cohort of Spanish university graduates. 

  • Further studies are needed to confirm these epidemiological findings.

Publication date

July 7, 2021


Preventive Medicine


Alejandro Fernández-Montero, José Miguel Olmo-Jimenez, Natalia Olmo, Maira Bes-Rastrollo, Laura Moreno-Galarraga, Javier Moreno-Montañés, Miguel A. Martínez-González
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