摘要
目的 探讨视轴角膜反光点(VACRP)为切削中心、瞳孔中心(PC)为切削中心对近视眼患者飞秒激光制瓣准分子激光原位角膜磨镶术(FS-LASIK)后视力水平和屈光度的影响。方法 选择2018年10月至2020年10月于咸阳市第一人民医院视光中心行FS-LASIK手术治疗的70例近视眼患者(140眼)为研究对象,根据切削中心不同分为VACRP组(33例66 眼)和PC组(37例74眼)。比较两组患者术后1个月裸眼视力(UCVA)、散光度、切削中心偏移量差异性;比较两组患者术前及术后1个月的最佳矫正视力(BCVA)、屈光度数、角膜像差[全角膜(tot)和角膜前表面(fro)总高阶像差(HOA)、球面像差(Z_(40))、垂直慧差(Z_(3-1))、水平慧差(Z_(31))]等指标变化情况。结果 术后1个月,两组患者的 UCVA≥1.0 发生率比较差异无统计学意义(P>0.05);VACRP 组和 PC 组患者的散光度[(-0.39±0.11) D vs(-0.76±0.17) D]、切削中心偏移量差[(0.187±0.029) mm vs (0.415±0.076) mm]比较,VACRP组明显低于PC组,差异均有统计学意义(P<0.05);术后1 个月,两组患者的BCVA (LogMAR)、屈光度数均较术前降低,差异均有统计学意义(P<0.05),但组间比较差异无统计学意义(P>0.05);术后 1 个月,两组患者的 totHOA、totZ_(40)、totZ_(3-1)、totZ_(31)、froHOA、froZ_(40)、froZ_(3-1)、froZ_(31)均较术前升高,且VACRP组明显低于PC组,差异均有统计学意义(P<0.05)。结论 以VACRP为切削中心的FS-LASIK手术可使患者术后散光度、切削中心偏移量差和角膜像差减小,获得更好的视觉质量。
Objective To explore the effects of selecting visual axis corneal reflex point (VACRP) as cutting center and pupil center (PC) as cutting center on the visual acuity and diopter after femtosecond laser-assisted in situ keratomileusis (FS-LASIK) in patients with myopia. Methods A total of 70 patients with myopia (140 eyes) who underwent FS-LASIK in Optometry Center, the First People’s Hospital of Xianyang from October 2018 to October 2020 were selected and divided into VACRP group (33 cases, 66 eyes) and PC group (37 cases, 74 eyes) according to the different cutting centers. The postoperative uncorrected visual acuity (UCVA), astigmatism, and cutting center offset at 1 month after surgery were compared between the two groups, as well as best visual acuity (BCVA), diopter, and corneal aberrations [high order aberration (HOA), spherical aberration (Z), vertical coma aberration (Z), and horizontal coma aberration (Z) of total cornea (tot) and anterior corneal surface (fro)] before surgery and at 1 month after surgery. Results There was no statistically significant difference in the incidence of UCVA≥1.0 between the two groups at 1 month after surgery (P>0.05). The astigmatism and cutting center offset in VACRP group were lower than those in PC group (P<0.05): (-0.39±0.11) D vs (-0.76±0.17) D, (0.187±0.029) mm vs (0.415±0.076) mm. At 1 month after surgery, the BCVA (LogMAR) and diopter in the two groups were significantly decreased compared with those before surgery (P<0.05), but there were no statistically significant differences between the two groups (P>0.05). The totHOA, totZ, totZ, totZ, froHOA, froZ,froZ, and froZwere all increased compared with those before surgery, and the indexes in VACRP group were lower than those in PC group (all P<0.05). Conclusion FS-LASIK surgery with VACRP as the cutting center can reduce the postoperative astigmatism, cutting center offset, and corneal aberrations, and achieve good visual quality.
作者
王彤
王阜蕾
裴瑞
WANG Tong;WANG Fu-lei;PEI Rui(Optometry Center,the First People's Hospital of Xianyang,Xianyang 712000,Shaanxi,CHINA)
出处
《海南医学》
CAS
2022年第19期2529-2532,共4页
Hainan Medical Journal
基金
陕西省卫生厅科研基金项目(编号:2018D162)。
