Clinical analysis of Ozil torsional handpiece axis control

Objective To analyze the actual terminal phacoemulsification energy effect in intraocular space,axis motion control model of Ozil torsional handpiece and to evaluate the necessity and the impact of the non-target tissues within the eye.Methods Induced by high aspiration pressure (300～350mmHg),hard nucleus (Grade:Ⅲ～Ⅳ) of senile cataract was chopped before phacoemulsification in 126 patients (126 eyes).Sixty patients (60 eyes) accepted ultimate energy control on the base of Ozil torsional handpiece axis control model; Another 66 patients (66 eyes) were compared as the Ozil torsional handpiece non-axis control group.The differences of accumulated energy complex and 8～10 hr postoperation intraocular pressures (IOP) and 24hr postoperation comeal edema rate were compared between two groups.Results The difference of accumulated energy complex was compared between two groups.(t =2.263,P ＜0.05).Difference of 8～10hr postoperation IOP existed between two groups.(t =2.069,P ＜0.05).The rates of 24hr postoperation corneal edema was lower in energy dissipation control group than that in the reviewed group (x2=5.41,P ＜0.02).Ozil torsional handpiece axis control could focus phaco energy terminal effects more precisely and protect non-target tissues injuries from energy dissipation.Conclusions Ozil torsional handpiece axis control can minimize the level of dissipated energy and improve the accuracy and safety of Ozil phaco mode. Key words: Phacoemulsification;  Intraocular pressure;  Energy;  Corneal