The variation in biometric parameters of cataract patients with over-long axial length before and after operation

Abstract

Objective To analyze the change of biometric parameters for patients with over-long axial length after cataract surgery. Methods Twenty eyes of 15 patients, from September 2013 to Feburary 2014 in Xuanwu Hospital were recruited for this study. Phacoemulsification and IOL implantation were performed in those cataract patients. The ocular biometric parameters were recorded by optical coherence biometry (IOL Master) and ultrasound biomicroscopy (UBM) before surgery and three months after surgery. Statistical software package SPSS 17.0 was used to analyze statistically. Results Compared with the preoperative biometric parameters, the axial length shortened and the anterior chamber deepened after surgery, and the difference was statistically significant. The corneal curvature had no significant difference three months after the surgery. There was negative relationship between age and preoperative axial length. No correlation was found between age and preoperative corneal curvature or preoperative anterior chamber depth. Preoperative axial length, preoperative corneal curvature, and preoperative anterior chamber depth had no correlation between each other. There was no correlation between postoperative anterior chamber depth and preoperative axial length, or preoperative corneal curvature, or preoperative anterior chamber depth. Conclusion For cataracts with over-long axial length, the axial length shortened and the anterior chamber depth deepened after cataract surgery. The prediction of postoperative anterior chamber depth still needs to study further. Key words: Cataract; Lens, intraocular; Axial, over-long; Biometry