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OphthalmologicalMild
Refractive Error
Ophthalmology · Ophthalmological
Mild
Severity
Very common — affects an estimated 2.5 billion people worldwide
Prevalence
No
Contagious
Ophthalmology
Specialist
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🔬Causes & Risk Factors
- 1Refractive error arises from a mismatch between the length of the eyeball and the focusing power of the cornea and lens
- 2an eyeball that is too long causes myopia
- 3one that is too short causes hyperopia
- 4and an irregularly shaped cornea causes astigmatism. Presbyopia occurs naturally with age as the lens loses its flexibility and ability to change shape for near focus. Genetics plays a strong role in most refractive errors
- 5and excessive near-work or reduced outdoor time in childhood is linked to increased myopia risk.
More About Refractive Error
About the Refractive ErrorWarning Signs of Refractive ErrorCommon Symptoms of Refractive ErrorHow Doctors Diagnose Refractive ErrorTreatment Options for Refractive ErrorRefractive Error PreventionRefractive Error ProgressionRefractive Error Treatment CostFrequently Asked Questions About Refractive ErrorAsk a Question About Refractive ErrorConditions Related to Refractive Error
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⚕️ Medical Disclaimer
This page is for informational purposes only and does not substitute professional medical advice. Always consult a qualified healthcare professional. In emergencies, call 112.