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Updated April 09, 2014

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Definition: Emmetropia is the term used to describe a person’s vision when absolutely no refractive error or de-focus exists. Emmetropia refers to an eye that has no visual defects. Images formed on an emmetropic eye are perfectly focused, clear and precise.

Eyes that have emmetropia do not require vision correction. When a person has emmetropia in both eyes, the person is described as having ideal vision.

Also Known As: Ideal vision, perfect vision
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