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Hypermetropia: definition

Hypermetropia (long-sightedness) is where the eye is shorter than average or the cornea is too flat, meaning that light rays focus behind the retina. Light rays from close objects, such as writing on a page of a book, might not be sharply focussed on the retina. Someone with hypermetropic eyes would usually find their distance vision to be relatively clearer than their near vision although the distance might be significantly blurred too, especially if they were an older adult.


Placing a plus-powered (convex) lens in front of a hypermetropic eye allows the image to be moved forward allowing for correct focus on the retina. A degree of long-sightedness is common in many people, although this only presents a problem when our ability to see is significantly affected or where headaches and eye strain are common.

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