Outcomes of Phacoemulsification With Torsional Ultrasound

Cataract Clinical Trial

Official title: A Randomised Trial of Torsional Ultrasound Versus Longitudinal Ultrasound During Phacoemulsification of Age-related Cataracts: Comparison of Intra-operative Performance and Impact on Post-operative Endothelium Integrity

Status Completed

Clinical Trial Summary

To determine the differences in intra-operative complications, surgical duration, fluid usage, corneal thickness and endothelium cell density in eyes undergoing microcoaxial phacoemulsification (MCP) either with Torsional or longitudinal ultrasound during the surgery and at post-operative day 1, 1 month and 3 months.

Clinical Trial Description

Introduced in mid 2006, torsional ultrasound (OZil, Infiniti Vision System, Alcon Laboratories, Texas, USA) uses rotational oscillations at ultrasonic frequencies to emulsify cataractous lens material in a seamless cutting motion from a tip that oscillates laterally. The side-to-side movement of the phaco tip produces minimal repulsion of lens material from the phaco tip resulting in improved followability. Clinically this translates into more effective lens removal with torsional phaco in comparison to the conventional ultrasound mode.to test this in a clinical scenario we undertook this study. ;

Study Design

Allocation: Randomized, Endpoint Classification: Bio-equivalence Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Cataract

• NCT number: NCT01010490
• Study type: Interventional
• Source: Iladevi Cataract and IOL Research Center
• Status: Completed
• Phase: Phase 4
• Start date: May 2007
• Completion date: March 2009