Exhibit 11 THE COOPER COMPANIES, INC. AND SUBSIDIARIES Calculation of Earnings Per Share (In thousands, except per share figures) (Unaudited) Three Months Ended January 31, 1998 1997 ------ ------ Basic: - ------ Net income $ 5,993 $ 3,310 ------- ------- Weighted average common shares 14,808 11,676 ------- ------- Basic earnings per share $ 0.40 $ 0.28 ------- ------- Diluted: - -------- Net income $ 5,993 $ 3,310 ------- ------- Weighted average common shares 14,808 11,676 Dilutive warrants 60 41 Dilutive options 486 203 ------- ------- Effect of dilutive securities 546 244 ------- ------- Denominator for diluted earnings per share 15,354 11,920 ======= ======= Dilutive earnings per share $ 0.39 $ 0.28 ======= ======= 23