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What are common focusing/refractive problems?
Myopia (nearsightedness) is the ability to see near points well
but distant objects are quite blurred. This near point may be a
few inches to a few feet away depending on the severity of the
myopia.
Hyperopia (farsightedness) is the ability to initially see distance
better than near, however this progresses to the point where
both distance and near points are blurred.
Astigmatism is when the focusing structures of the eye (the
cornea and lens) have different focusing powers in different
meridians. If a cornea is somewhat oval shaped, like a football,
it won’t focus as well as a cornea that is more spherical like a
basketball. Small amounts of astigmatism are present in the
majority of the adult population, with some people having very
significant amounts.
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