SUMMIT MEDICAL SYSTEMS, INC. EXHIBIT 11.1 Computation of Earnings Per Share (Unaudited) Three Months Ended March 31, 1997 1996 (RESTATED) - ------------------------------------------------------------------------------- PRIMARY EARNINGS PER SHARE: Weighted average shares outstanding 10,347,575 8,503,767 Net effect of dilutive stock options--based on the treasury stock method - - ------------------------ 10,347,575 8,503,767 ======================== Net loss $(4,498,047) $ (251,404) ======================== Net loss per share $ (0.43) $ (0.03) ======================== FULLY DILUTED EARNINGS PER SHARE: Weighted average shares outstanding 10,347,575 8,503,767 Net effect of dilutive stock options--based on the treasury stock method - - ------------------------ 10,347,575 8,503,767 ======================== Net loss $(4,498,047) $ (251,404) ======================== Net loss per share $ (0.43) $ (0.03) ======================== Page 14