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How do bifocals treat presbyopia?

Bifocals are used when presbyopia affects someone who was already myopic. The upper half of the glasses resemble the glasses they probably already had; it allows them to see objects that are far away. The lower lens corrects vision for nearby objects. Trifocals are also available to improve vision at medium distances.

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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.