Types of Astigmatism
Hyperopic Astigmatism
compound astigmatism that in which both principal meridians are either hyperopic (compound hyperopic astigmatism, with rays coming into focus behind the retina) or myopic (compound myopic astigmatism, with rays coming into focus in front of the retina).
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Mixed Astigmatism
mixed astigmatism that in which one principal meridian is hyperopic and the other myopic. myopic astigmatism that in which the light rays are brought to a focus in front of the retina.
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Myopic Astigmatism
compound astigmatism that in which both principal meridians are either hyperopic (compound hyperopic astigmatism, with rays coming into focus behind the retina) or myopic (compound myopic astigmatism, with rays coming into focus in front of the retina).
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