Surgeon A Surgeon B Surgeon C
  Mean (Range) Standard deviation Mean (Range) Standard deviation Mean (Range) Standard deviation
Incision 100 (65-124) 9.8 65 (55-72) 2.8 53 (45-60) 2.5
Capsulorhexis 158 (150-165) 2.5 93 (82-105) 3.8 65 (60-72) 2.0
Hydrodissection 56 (44-65) 3.5 45 (40-59) 3.2 33 (30-41) 1.8
Phacoemulsification 616 (602-820) 36.3 453 (444-472) 28.0 353 (333-476) 23.8
Irrigation Aspiration 131 (100-188) 14.7 120 (115-145) 5.0 99 (72-133) 10.2
Lens insertion 70 (45-125) 13.3 45 (35-55) 3.3 50 (35-90) 9.2
Wound Closure 20 (12-45) 5.5 13 (10-18) 1.3 10 (9-35) 4.3
Table 1: The duration (in seconds) at identified stages of the operation for each surgeon.