A correction is presented to a quantitative study [J. Opt. Sec. Am. 55, 572
(1965)] of Rayleigh's criterion for allowable wave-front amplitude aberrat
ion. Also, for comparison, Marechal's alternative root-mean-square criterio
n is evaluated under the same conditions. (C) 1999 Optical Society of Ameri
ca [S0740-3232(99)01909-2] OCIS codes: 080.1010, 110.3000.