Posterior chamber phakic intraocular lens for correction of high myopia

Objective To observe the clinical efficacy of posterior chamber phakic intraocular lens (ICL)for correction of high myopia. Methods The data of 110 eyes of 55 cases with high myopia(-6.00 D--18.00 D)who received ICL implantation from Dec. 2017 to Sep. 2018 were collected and analyzed retrospectively. The patients were followed up for 3 months. The data were observed and analyzed between preoperative and postoperative. Results The differences of the average uncorrected visual acuity, best corrected visual acuity(LogMAR) and refraction were statistically significant between preoperative and 3 months postoperatively(t=14.580, 13.240, 11.770, P=0.010, 0.021, 0.013). There was significant difference of the root mean square value in the general lower-order aberrations between preoperative and 3 months postoperatively(t=-18.780, P=0.000). The differences in the general higher-order aberrations, 3-order aberrations, 4-order aberrations, and 5-order aberrations root mean square value were not statistically significant between preoperative and 3 months postoperatively(t=-1.278, 0.785, 0.351, 0.457, P=0.125, 0.412, 0.224, 0.324). The differrences of Z40, Z31, Z3-1, Z33, Z3-3 were not statistically significant between preoperative and 3 months postoperatively (t=0.654, 0.545, 0.387, 0.268, 0.578, P=0.547, 0.371, 0.241, 0.187, 0.428). Conclusion Posterior chamber phakic intraocular lens is safe, effective, predictable and stable for correction of high myopia and postoperative visual quality is good. Key words: Lens, intraocular, phakic, posterior chamber; Myopia, high; Visual quality