Fig. 3
From: Progressive cracking technique for phacoemulsification of superhard cataracts: a case report
Schematic diagram of step 3. Once the vacuum reaches the maximal setting, the surgeon slightly lifts the nucleus anteriorly (a) The surgeon moved the chopper from the distal position to the proximal position along the existing crack, and extended the crack till it was complete across the whole lens. In super dense lens, the surgeon placed the chopper at the bottom of the crack, and cut across the strands upwards (b, c and d)