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What causes high myopia?

High myopia develops in eyes that are elongated instead of circular like a ball. Severe elongation of the eyeball causes higher degrees of myopia. As the eyeball lengthens, it stretches the retina tissue at the back of the eye. The exact cause for abnormal growth is unknown. Myopia, in general, is highly hereditary and can be affected by environmental influences including frequent "up-close " reading or computer work. Symptoms of high myopia usually begin in children age eight and older.

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What type of doctor should I see to address youth onset myopia?
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How common is high myopia?
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.