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Comparison of keratometric corneal astigmatic power before and after phacoemulsification in Iraq

Poster Details

First Author: Y.Abdullah OMAN

Co Author(s):                        

Abstract Details


To study the surgically induced keratometric change and refractive astigmatism (measured using the autorefractor) after phacoemulcification surgery.Prospective consecutive case study.


Random sample of phacoemulsification cases in Ibn AlHaitham Eye Teaching Hospital Baghdad - Iraq , from November 2011 to January 2012


Phacoemulsification surgery with a superior clear corneal incision were included. Patients with prior corneal surgery or corneal opacity or those with operative complications were excluded. Variables analyzed included preoperative and postoperative corneal astigmatism acquired using automated keratometry. Using vector astigmatism analysis, surgically induced astigmatism (SIA) was calculated. A special Excel spreadsheet was used to the average amount of surgically induced astigmatism created during phacoemulsification. This individualized surgeon information can then be summarized by incision type, size, and location by using a built-in report function.


The study population consisted of 62 patients (62 eyes) who had uncomplicated phacoemulsification surgery. The population consisted of 34 females and 28 males, with 33 right eyes and 29 left eyes. The average patient age was 63 years. Autokeratorefractive readings preoperatively and 1 month postoperatively were examined. The surgically induced astigmatism (SIA) values were found to range from a minimum of (0D) to a maximum of (2.02D), with a mean value of about 0.7D and a standard deviation (S.D.) value of about 0.51D.


The surgically induced astigmatism (SIA) among phacoemulsification cases in Ibn Al Haitham Eye Teaching hospital is in the low order range but further effort is warranted to evaluate and manage so that it will be comparable to the results in advanced centers. By accurately quantifying surgically induced astigmatism, surgeons in our hospital may increase the accuracy of the clinical outcomes in terms of control of astigmatism. Thus improving patient satisfaction and uncorrected visual acuity.

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