Observation on the effects of excimer laser on correction of anisometropia after intraocular lens implantation

Abstract

Objective To investigate the efficacy and safety of excimer laser surgery on anisometropia after intraocular lens implantation. Methods Twenty patients (32 eyes) with static anisometropia more than 1 year after cataract extraction and intraocular lens implantation treated in Ear Nose and Throat Hospital of Jiaozuo from November 2014 to December 2016 were selected. All patients were treated by excimer laser and were followed up for 6 months. Postoperative vision, refractive status, corneal topography, intraocular pressure, corneal epithelium and subepithelial corneal haze of all patients were observed. Results After laser treatment, 32 eyes achieved expected corrected diopter; except 5 eyes which kept a degree of diopter for patients’ require of good near vision, open hole visual acuity of 27 eyes(84.38%) ≥0.8, reached or exceed the preoperative best corrected vision, residual mirror ball and axis mirror were within±0.75 D. After surgery, the degree of anisometropia of patients was reduced to (0.47±0.31)D from (3.44±1.07)D, and the difference was statistically significant (P<0.01). There was no infection, severe dry eye or other complications after operation, and the safety of treatment was high. Conclusions Excimer laser in the treatment of anisometropia after intraocular lens implantation is safe and effective. Key words: Cataract; Artificial lens; Anisometropia; Excimer laser