Magnitude and Orientation of Zernike Terms in Patients with Keratoconus
Investigative Ophthalmology & Visual Science2007Vol. 48(7), pp. 3062–3062
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Ryo Kosaki, Naoyuki Maeda, Kenichiro Bessho, Yuichi Hori, Kohji Nishida, Asaki Suzaki, Yoko Hirohara, Toshifumi Mihashi, Takashi Fujikado, Yasuo Tano
Abstract
In addition to the larger amount of trefoil, coma, tetrafoil, and secondary astigmatism, keratoconic eyes tend to have a reverse coma pattern and reverse trefoil aberrations compared with normal eyes. Although RGP lenses correct the irregular astigmatism, smaller comet-like retinal images in the opposite direction remain due to residual vertical coma.
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