Generation of Third-Order Spherical and Coma Aberrations by Use of Radially Symmetrical Fourth-Order Lenses
Lo´pez-Gil et al. Vol. 15, No. 9/September 1998/J. Opt. Soc. Am. A 2563 Generation of third-order spherical and coma aberrations by use of radially symmetrical fourth-order lenses N. Lo´pez-Gil Section of Neurobiology and Behavior, Cornell University, Ithaca, New York 14853-2702 and Laboratorio de O´ ptica, Departamento de Fı´sica, Universidad de Murcia, 30071 Murcia, Spain H. C. Howland Section of Neurobiology and Behavior, Cornell University, Ithaca, New York 14853-2702 B. Howland 4913 Regent Street, Madison, Wisconsin 53705 N. Charman Department of Optometry and Vision Science, University of Manchester Institute of Science and Technology, P.O. Box 88, Manchester, M60 1QD, UK R. Applegate Department of Ophthalmology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78284-6230 Received December 24, 1997; revised manuscript received April 28, 1998; accepted May 1, 1998 We have extended the method of Alvarez [J. Am. Optom. Assoc. 49, 24 (1978)] to generate a variable magni- tude of third-order spherical and/or coma aberration by using a combination of fourth-order plates with a mag- nification system. The technique, based on the crossed-cylinder aberroscope, is used to measure the wave- front aberration generated by the plates. The method has been applied to correct the third-order spherical aberration generated by an artificial eye as well as the coma produced by a progressive addition ophthalmic lens. The simplicity of the method and its relatively low cost make it attractive for partial correction of the aberrations of the eye. © 1998 Optical Society of America [S0740-3232(98)03709-0] OCIS codes: 220.1000, 220.1010, 220.4830, 220.0220, 170.4460, 170.4470.
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