Comparative study between direct chop and stop and chop in phacoemulsification surgery of grade iii-iv nuclear sclerosis in patients admitted in kle’s dr.prabhakar kore hospital and medical research centre belagavi: one year randomised control study

Abstract

Background and objectives:Visual impairment has emerged as a potential debility affecting almost 285 million people around the world. WHO in the year 2007 has reported the contribution of cataract to global blindness as 39%.There has been so much evolution in the field of cataract surgery from 600 BC to the current time. The surgeons have been a witness to remarkable evolution in the techniques involved in cataract surgery in the 20th century like couching (600 BC) and ICCE (1973). Due to the non-curable complications associated, they have become obsolete. The emergence of phacoemulsification by Dr.CharlesKelman in 1967 is regarded as a major milestone in the field of cataract surgery. The successful management of a cataract surgery by phacoemulsification depends on various factors and a pivotal element is the firmness or brunescence of the lens. Even experienced surgeons view phacoemulsification in hard cataracts as challenge.As the hardness of nucleus increase with maturation the procedure of phacoemulsification becomes more difficult. Various techniques have been described for the nuclear management in phacoemulsification like,divide and conquer,stop and chop,direct chop,retro chop etc.Among these stop and chop and direct chop are quite popular. Only a few articles compare the direct chop and stop and chop techniques using various parameters. In this study, we compare the efficacy and safety of the two techniques prospectively. • To evaluate the safety and efficacy of two surgical techniques: directchop and stopandchop in phacoemulsification of grade III-IV nuclear sclerosis