1 ALLERGAN, INC. EXHIBIT 11 COMPUTATION OF EARNINGS PER SHARE Earnings per share of common stock, including common stock equivalents, have been computed based on the following weighted average number of shares and net earnings: Three Months Nine Months Ended Ended September 30, 1994 September 30, 1994 ------------------ ------------------ (000's, except per share amounts) Weighted average number of shares outstanding during the period 63,379 63,468 Weighted average number of additional shares issuable in connection with dilutive stock options based upon use of the treasury stock method and average market prices 633 381 ------- ------- Weighted average number of common shares including common stock equivalents 64,012 63,849 ======= ======= Net earnings for the period $30,230 $75,939 ======= ======= Primary earnings per common share $ 0.47 $ 1.19 ======= =======