Effect of the vault on corneal endothelial cells after microincision ICL V4c implantation without viscoelastic

Abstract

AIM:To evaluate the effect of the vault on corneal endothelial cells after implantation of central hole implantable lens(ICL)V4c without viscoelastic microincision.METHODS: Prospective non-randomized controlled study. A total of 70 patients(137 eyes)with myopia who underwent ICL V4c implantation in our hospital from November 2017 to February 2018 were divided into low vault group(100μm<vault≤250μm, 37 eyes), medium vault group(250μm<vault≤750μm, 69 eyes)and high vault group(750μm<vault≤900μm, 31 eyes)according to the size of postoperative vault. After 1a of follow-up, the changes of corneal endothelial cell count and anterior chamber parameters were observed.RESULTS:At 1wk after operation, the anterior chamber depth, anterior chamber volume and anterior chamber angle of the three groups were all decreased compared with those before operation(P<0.05). There was no significant difference in corneal endothelial cell count among the three groups at different time points before and after surgery. The loss rate of corneal endothelial cells in the low vault group at 1wk, 3mo and 1a after surgery were about 1.2%, 1.5% and 1.7%, respectively. The loss rate of corneal endothelial cells in the middle vault group were about 0.5%, 0.7% and 1.0%, respectively. The loss rate of corneal endothelial cells in the high vault group were about 1.1%, 1.3% and 1.4%, respectively.CONCLUSION:The vault in early period after ICL V4c implantation without viscoelastic microincision had no significant effect on corneal endothelial cells.

Keywords

• vault
• icl implantation without viscoelastic
• corneal endothelial cell
• corneal endothelial cell loss rate
• anterior chamber parameters