[Epidemiology of myopia].
BACKGROUND
Myopia is the most common cause for impaired vision in children and young adults with increasing tendency. Although myopia is hereditary, genetic findings do not explain the full extent of its recent increase. Epidemiologic studies are required to investigate the prevalence and incidence of this disease.


OBJECTIVE
The prevalence, incidence and progression of myopia with its economic impact are emphasized to review the distribution and consequences of the development and progression of myopia.


METHODS
A systematic literature search was conducted in MEDLINE.


RESULTS
The global prevalence of myopia is currently 28.3 % and is dramatically increasing. In 2050, half of the world population will be affected. Myopia starts earlier and exhibits a peak prevalence in young Asian adults. High myopia indicates a similar development. Interventions to slow the development and progression of myopia are strongly required due to the medical and socio-economic drawbacks for the individuals and for society.


CONCLUSIONS
Myopia is already a ubiquitous phenomenon in some parts of the world. One out of ten persons will be at a relevant risk of becoming blind as a result of myopia in the future. Preventive measures have not shown sweeping success.
Augenklinik und Poliklinik, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland. susanne.hopf@unimedizin-mainz.de.
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Augenklinik und Poliklinik, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland.
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D015984:Causality; D015897:Comorbidity; D018450:Disease Progression; D017048:Health Care Costs / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D038622:Internationality; D009216:Myopia / Q000191:economics* / Q000453:epidemiology* / Q000517:prevention & control; D012307:Risk Factors; D014786:Vision Disorders / Q000191:economics* / Q000453:epidemiology* / Q000517:prevention & control
Ametropia; Incidence; Prevalence; Progression; Vision disorders