Objective To analyze the effect of vault on the rotation angle of astigmatic axial of intraocular lens after the implantation of toric implantable collamer lens V4c(TICL V4c).Methods A total of 174 eyes from 89 myopia patients who were given with TCIL V4c implantation were selected and divided into low-,medium-and high vault groups based on the vault heights after surgery.The patients were examined for uncorrected visual acuity(UCVA),best-corrected visual acuity(BCVA),refractive errors(diopter of spherical power and diopter of cylindrical power),non-contact intraocular pressure(IOP),anterior chamber depth(ACD),and endothelial cell density(ECD)before surgery.The patients were followed up for 2 years after surgery.Vault changes,rotation angle of astigmatism axis were recorded.The correlation was analyzed between vault and rotation angle of astigmatism axis.Results At two years after TICl V4c implantation,the average postoperative UCVAs of the patients in the low-,medium-and high-vault groups were higher than those before surgery(P＜0.01).At two years after surgery,UCVAs of the patients in three groups(0.97±0.24)was better than their preoperative BCVAs(t=-8.78,P＜0.01).The mean preoperative diopter of spherical power(-10.10±3.76)D of the myopic patients in three groups was increased to postoperative(-0.39± 0.81)D,and the mean preoperative diopter of cylindrical power(-2.36±1.03)was increased to postoperative(-0.44±1.53)D(P＜0.01).IOPs and ECDs of the followed-up patients in three groups after surgery remained within the normal range,and there were no statistically significant differences between before and after surgery(P＞0.05).All patients did not experience serious complications such as glaucoma,retinal detachment and uveitis after surgery.During the 2-year follow-up,there was no significant change in vault among three groups(P＞0.05).The patients astigmatic axis underwent varying degrees of rotation.Correlation analysis showed that the vault did not affect the rotation angle of the astigmatic axis(r=-0.117,P＞0.05).Conclusion TICL V4c implantation has good effectiveness and safety,and surgery-induced vault has no significant impact on the rotation angle of the astigmatism axis.
vaultastigmatic axial of intraocular lensTICL V4c implantionmyopiaastigmatismametropia
维普
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