TY - JOUR T1 - RACIAL DIFFERENCES AS ILLUSTRATED BY THE MYDRIATIC ACTION OF COCAINE, EUPHTHALMINE, AND EPHEDRINE JF - Journal of Pharmacology and Experimental Therapeutics JO - J Pharmacol Exp Ther SP - 429 LP - 445 VL - 36 IS - 3 AU - K. K. CHEN AU - EDGAR J. POTH Y1 - 1929/07/01 UR - http://jpet.aspetjournals.org/content/36/3/429.abstract N2 - The pupil dilating effect of cocaine, euphthalmine, l-ephedrine, dl-ephedrine, and d-pseudoephedrine, has been compared in Caucasians, Chinese, and negroes, both in diffuse daylight, and under controlled illumination with accurate measurements. Caucasians are the most, and negroes the least susceptible to the mydriatic action of the drugs under investigation—the Chinese being intermediate. ER -