Fig. 1From: Progressive cracking technique for phacoemulsification of superhard cataracts: a case reportSchematic diagram of step 1. (a) A screenshot to show the procedure that the entry point for a phaco tip is slightly axial to the rhexis and the phaco tip extended into and towards the very center of the nucleus with preset maximal energy. (b & c) Drawings of front side and lateral sideBack to article page