Astigmatism is an optical aberration characterized by rays
propagating into two perpendicular planes focusing at different
distances, thus providing two different foci delimiting an
intermediate area of focus called the Conoid of Sturm. This book
discusses the types, diagnosis and treatment options of
astigmatism. The topics include management of astigmatism in
patients after a corneal transplant; power vectors; toric
intraocular lenses for the correction of astigmatism during
cataract surgery; irregular astigmatism management; and a
comprehensive overview of preexisting astigmatism during
phacoemulsification.
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