Sarcouncil Journal of Internal Medicine and Public Health

Abstract: A cross-sectional study was conducted on Iraqi patients who underwent cataract surgery and were previously assessed using the Lenstar 900 LS system. Patients aged 20 to over 80 years were recruited in Baghdad, Iraq, where Accurate biometric measurements are essential for calculating the refractive power of the lens within the eye. In the age of biometrics, the measurement of the optical axis length (AL) is considered the primary factor in refractive error. Postoperative refractive data were analysed using appropriate statistical methods to compare the effectiveness of two intraocular lens calculation methods. The analysis included evaluating (AL), (ACD), (LT), and (CCT), CCT (µm), K (D), and WTW, where the statistical analysis conducted in this study relied on a variety of statistical methods, including descriptive measures and hypothesis testing. Descriptive measures such as the mean, standard deviation, frequency, and percentages were used to describe the characteristics of the variables and provide concise information about the collected data. This study was conducted in accordance with the ethical principles of the Declaration of Helsinki, and medical records in Iraq were analysed over a one-year study period. The results obtained in this study are: 1)AL was 23.58±1.14 mm 2) The mean anterior chamber depth was 3.15 ± 0.42 mm. 3) A statistical correlation was found between AL and ACD (p = 0.612) and with mean keratometry (r = -0.528). 4) In this study, according to the results, longer axial lengths were found in men than women (p = 0.005), and larger white-to-white diameters were also observed (p = 0.008). Finally, we concluded from our study. These findings reinforce the continued use of optical biometry as the standard method for preoperative IOL power calculation and the need for demographic data to be taken into account when interpreting biometric data.