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Astigmatism is an out-of-roundness of one or more surfaces in the eye's optical system.
An eye with no astigmatism is spherical in shape, like a marble. On the other hand an eye with astigmatism has a distorted shape, slightly like a grape.
In lesser degrees this can cause strain and discomfort after visual concentration; while in higher degrees astigmatism causes images at all distances to be distorted or blurred.
For more information on amblyopia or any other disorder of the eye, contact Boneham Optometrist Eyecare Plus direct on (02) 9264 6784 or via the web here.
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