Eye Conditions

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Refractive errors are when the image of what you are looking at is not focussed properly onto the retina. The retina is like a film in a camera. There are four major refractive errors: myopia, hyperopia, presbyopia and astigmatism.

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For perfectly clear vision, the image of a viewed object needs to be focussed onto the retina, just as a camera has to be focussed properly in order to take a clear picture. If the image is not focussed exactly on the retina, then the image will be blurred, just like an out-of-focus photograph. In this case, the person is said to have a refractive error.

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Myopia

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Myopia is when you have trouble seeing clearly in the distance.

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Hyperopia

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Hyperopia is when you have trouble focussing up close.

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Presbyopia

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Presbyopia is a common condition that makes reading difficult in middle age. 

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Astigmatism

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When the front of the the eye is oval shaped and means blurred vision at all distances.