Observation of visual quality after multifocal intraocular lens implantation in patients with high myopia complicated with cataracts
Objective To observe the visual quality and stability in the capsular bag of patients with high myopia complicated with cataract after they received multi-focal intraocular lens implantation.Methods A total of 45 patients who underwent phacoemulsification combined with intraocular lens implantation surgery from July 2019 to June 2020 in Xi'an People's Hospital were selected and divided into 3 groups.Group A contained 11 patients(15 eyes)with high myopia complicated with cataracts who were implanted with multifocal intraocular lens(MIOL).Group B contaied 13 patients(15 eyes)]with high myopia complicated with cataracts who were implanted with single-focus intraocular lens(SIOL).Group C Contained 13 patients(15 eyes)with simple senile cataracts who were implanted with multifocal intraocular lens(MIOL).After the surgery,the far and near vision,visual quality,and the tilt of the intraocular lens in the capsular bag of the three groups were observed at 1 month,3 months,and 6 months.Results The UDVA of the 45 eyes in group A,B,and C were all significantly improved after surgery.The UDVA and UNVA in group A and C were significantly improved compared with group B,and the difference was statistically significant(P＜0.05).After surgery,the MTF of group A,B,and C were significantly improved,while the OSI value was significantly decreased,and the differences were statistically significant(P＜0.05).In the comparison among groups,the MTF of group A and C after surgery were smaller than that of group B,and OSI was larger than that of group B,but the difference was not statistically significant(P＞0.05).The total high-order aberra-tions,intraocular coma,trefoil,and spherical aberrations of the whole eye in group A and C after surgery were all increased compared with group B,especially the trefoil was significantly increased,and the difference was statisti-cally significant(P＜0.05).Three months after surgery,the Tilt(S1)values of group A,B,and C under a 6 mm pupil were all less than the normal range of 0.6,and there was no significant difference among the three groups(P＞0.05).Conclusion Implantation of regional multifocal intraocular lens for patients with high myopia complicat-ed with cataracts can provide good far and near vision,improve patients'visual quality,and have a high rate of spectacle independence.It has good early stability in the capsular bag,but the total high-order aberration of the whole eye after surgery increases,mainly manifesting as an increase in trefoil.
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