The influence of intraocular lens dislocation surgical correction method on corneal endothelium

Abstract

BACKGROUND:Intraocular lens (IOL) dislocation is a rare but serious complication of surgical treatment of patients with cataract. Among the factors contributing to its development, the main ones are pseudoexfoliation syndrome (PEX), high axial myopia, chronic uveitis, history of eye injury and age. There is no universal IOL dislocation correction technique.
 PURPOSE:To evaluate the impact on corneal endothelium of two different methods of IOL dislocation correction: IOL repositioning with transscleral suture fixation or IOL exchange to iris-claw one.
 MATERIALS AND METHODS:Within the study, 78 patients were examined and operated. All patients were divided into two groups: in the first group, IOL was repositioned with transscleral suture fixation, and in the second group IOL was exchanged to iris-claw IOL. Groups were equal by gender and age. Key estimated indicators were endothelial cell density and coefficient of variation reflecting the degree of polymegatism.
 RESULTS:Endothelial cell density was significantly lower both before surgery and at any term after it, in the group with IOL exchange, and coefficient of variation was significantly higher in the group with IOL exchange throughout this study.
 CONCLUSION:The choice of technique for IOL dislocation correction is the basis of success in surgical treatment. Certain preoperative examination data should be definitely considered, including the degree of dislocation, IOL type, IOP level, endothelial cell density and presence of concomitant ocular conditions.