Information Registration Programme Overview Satellite Education Programme Virtual Exhibitor Listing


All ePoster presentations will be available to view anytime throughout the Meeting in an Online Library

Search Abstracts by author or title


Randomised clinical trial between 3 chopping techniques: stop & chop vs direct chop vs terminal chop

Poster Details

First Author: A. Morya INDIA

Co Author(s):                        

Abstract Details


This is the first clinical trial of the World to compare ergonomics & various parameters in 3 chopping techniques - stop&chop vs direct chop vs a new terminal chop technique.This includes demography, pre&post-op visual-acuity(VA),endothelial cell loss(ECL),Central Corneal Thickness(CCT).Also intra-op complications & phaco parameters like cumulative dissipation of energy(CDE),Ultrasonic time(UST), Effective phaco time(EPT)&Torsional Phaco time(TPT).


At a tertiary Eyecare post-graduate Institute of Western Rajasthan, India. A single skilled phaco surgeon performed over 100 cases of phacoemulsification in each randomised group of chopping-technique in the grade 2 to 5 nucleus of cataract.


Randomisation was computer generated through a software and phaco was performed using three different techniques and pre and post-op parameters were noted along with the intra-op phaco parameters and complications. All cases were done by a single surgeon and using the same Alcon-Infiniti Phaco-System. This was the first such study to compare a newer technique of phaco-chop i.e Terminal-Chop.


There was no significant difference noted in demography, improvement of VA,ECL,changes in CCT, intra-op complications, phaco-parameters like UST,TPT & EPT. But there was a significant p value difference of <0.03 was noted in Terminal-chop technique over the other stop&chop and direct chop on comparing the CDE in all grades of nucleus(2-5). Statistically there was no difference between stop&chop and direct chop technique while dealing with all grades of nucleus.


Terminal-chop is a newer technique of nucleus chopping and on comparing it with the other two well-established techniques of stop&chop and direct-chop there was no statistically significant difference noted except in comparing CDE with a significant"p" value of<0.03. So Terminal chop is an easy and efficient technique to decrease CDE levels to a minimum with a special blunt tip wedge-shaped chopper- Terminator Chopper.

Financial Disclosure:


Back to Poster listing