A COMPRATIVE ANALYSIS OF VARIOUS INTRAOCULAR LENS POWER CALCULATION FORMULAE TO ACHIEVE EMMETROPIA FOLLOWING CATARACT SURGERY BY PHACOEMULSIFICATION

Dr. RAKESH MAGGON; Dr. SUMIT KUMAR SINGH; Dr. MANEESH JHA; Dr. SANDEEP GUPTA

Volume : IX, Issue : VIII, August - 2020

A COMPRATIVE ANALYSIS OF VARIOUS INTRAOCULAR LENS POWER CALCULATION FORMULAE TO ACHIEVE EMMETROPIA FOLLOWING CATARACT SURGERY BY PHACOEMULSIFICATION

Dr. Rakesh Maggon, Dr. Sumit Kumar Singh, Dr. Maneesh Jha, Dr. Sandeep Gupta

Abstract :

For the purpose of study the eyes are divided into following subgroups depending on the formulae used • SRK/T • HOFFER Q • HOLLADAY • HAIGIS This is a comparative analysis of various intraocular lens power calculation formulae to achieve emmetropia following Cataract surgery by phacoemulsification. We found in our study a total of 240 eyes were studied and subdivided into 4 groups as per IOL Formulae at Department of Ophthalmology, Command Hospital (Eastern Command), Kolkata between January 2018 –June 2019 were taken for the study. 60 Patients were randomly assigned to 4 groups each were underwent PKE with IOL implantation by a single surgeon using one of the 4 formulae. In our study distribution of mean AL in the groups was statistically significant (p=0.0099). Distribution of mean residual SRE with in the groups was statistically significant (p<0.0001). ). It was found that difference of mean small eye and normal eye with in groups was statistically significant but difference of mean large eye with in groups was not statistically significant . We found that aver all in all eyes Hoffers Q Formula is coming as most accurate. In Small eyes as well as in Normal eyes Hoffer Q IOL formula is most accurate followed by Holladay formula, SRK–T formula and Haigis formula and In case of Large eyes Holladay formula is coming better followed by Hoffer Q, Haigis and SRK–T formula.