The hard nucleus is considered as a piece of stone, so we use high phaco energy in standard phaco to
fragment it. A new technique was described in this paper for nuclear fragmentation in
Phacoemulsification, which does not depend mainly on phaco energy but depends on osmotic pressure
of the nucleus. The nucleus is a living tissue and has its own special anatomical and physiological rules
so we tried to fragment these hard nuclei rapidly and safely without phaco energy at all. This study
included 20 patients with hard cataract managed by our new technique. 15 patients with hard cataract
managed by divide and conquer technique (control group). we aimed to create a groove with two edges,
to inject saline 0.9% at one edge and fixate from the other. Also we aimed from this groove to
compensate for relative increase in the size of the nucleus after hydration then we used two blunt
choppers to divide the nucleus into four pieces. All pieces were similar to gelatinous mass with no
sharp borders. We found that corneal oedema, rupture of posterior capsule and mean effective Phaco
time were significantly higher in controls versus patients (P <0.019, P <0.026 and P <0.0001,
respectively). While there were insignificant difference in macular edema, increase in intra-ocular
pressure and visual acuity parameters between patients and controls (P <0.681, P <0.681 and P <0.944,
respectively). In conclusion, the hard nucleus has high osmotic pressure if activated it can fragment
itself. Fragmentation of the hard nucleus by simple method rendered it more soft, easily aspirated, with
less manipulation. This new technique save energy and its related complications.