Comparative Clinical Study Of Surgical Performance Of Quatera-700 Versus Current Phacoemulsification Systems

To compare the intra-operative surgical performance of Quatera-700 versus Centurion and Signature Pro phacoemulsification systems.

Nethradhama Superspeciality Eye Hospital, Bangalore, India.

A total of 180 non-consecutive eyes satisfying the eligibility criteria were recruited.  N=60  eyes were operated using each of the above systems, of which  n=30 eyes had LOCS III grade 1-2, and n=30 eyes had grade 3-4 nuclear density.  Phacoemulsification with foldable IOL implantation was performed by a single experienced surgeon. Chamber stability scores( 1- 4, 4 being the worst), fluid turnover per case, surge incidence and intra-operative complications were assessed.

Intra-operatively, the mean chamber stability score was significantly better and total phaco time( TPT) was significantly lower for the Quatera-700 in both the soft and dense cataract groups (p <0.001). The mean fluid turnover was significantly lower for the Quatera-700 in the dense cataract group, p=0.03, and so was the combined phaco and I/A time, p=0.01. One eye operated with Signature Pro, and 2 eyes operated with Centurion had PCR due to surge. The mean corneal clarity scores on POD-1 and specular counts at 2 weeks and  6 months were comparable.

The new Quatera-700 system resulted in superior intra-operative chamber stability, lowest total phaco time, and nil complication rates compared to Centurion and Signature Pro systems for emulsification of soft cataracts. In addition, combined phaco and I/A time and fluid consumption was least for denser cataracts.