Astigmatism Research Today is a free monthly online journal that collates and summarizes the latest research about Astigmatism, including details on cornea, retina, treatment, types, signs, tests.

Measurement of twofold astigmatism of probe-forming lens using low-order zone-axis ronchigram.

Kuramochi K, Yamazaki T, Kotaka Y, Kikuchi Y, Hashimoto I, Watanabe K

Department of Physics, Tokyo University of Science, 1-3 Kagurazaka/Shinjuku-ku, Tokyo 162-8601, Japan.

By using a low-order zone-axis ronchigram of a crystalline sample, a simple method for measuring twofold astigmatism of a probe-forming lens is proposed. This method allows precise measurement of the value of astigmatism from only one experimental ronchigram.

Published 18 February 2008 in Ultramicroscopy, 108(4): 339-45.
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