Difference between revisions of Astigmatism
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→Analogy with Chromatic Aberration
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in astigmatism. Adding some spherical correction would allow you to push the green back into focus. | in astigmatism. Adding some spherical correction would allow you to push the green back into focus. | ||
Chromatic aberration could be treated by adding some material which applies the opposite chromatic error | Chromatic aberration could be treated by adding some material which applies the opposite chromatic error — bending the blue light out a bit more than the red light, to cancel the error introduced by the eye. This corresponds to cylinder correction. (But as with all analogies, it's starting to stretch a bit thin...) | ||
==Irregular Astigmatism== | ==Irregular Astigmatism== | ||