Effect of crystalline lens rise on the vault after implantation of phakic posterior chamber implantable collamer lens

• Main Authors: Jing Wang, Zhuo-Yun Wang, Ting Xu, Li-Ming Tao
• Format: Article
• Language: English
• Published: Press of International Journal of Ophthalmology (IJO PRESS) 2021-02-01
• Series: Guoji Yanke Zazhi
• Subjects: myopia; phakic posterior chamber implantable collamer lens; crystalline lens rise; vault
• Online Access: http://ies.ijo.cn/cn_publish/2021/2/202102039.pdf

AIM:To investigate the relationship between crystalline lens rise(CLR)measured by anterior segment-optical coherence tomography(AS-OCT)and parameters of the anterior segment. And also measure the effects of CLR on the vault after phakic posterior chamber implantable collamer lens(PPC-ICL)implantation.METHODS:The study included 80 eyes of 40 patients who underwent PPC-ICL implantation at the Department of Ophthalmology, the Second Affiliated Hospital of Anhui Medical University, from July 2017 to July 2018, to measure the sulcus-to-sulcus(hSTS)distance of the eyes using a Compact Touch STS ultrasound biomicroscope and lens curvature(LC), Pentacam was used to measure horizontal-white-to-white(hWTW), anterior chamber depth(ACD)and the vault one year after the operation. Moreover, AS-OCT was used to measure the CLR and horizontal iridocorneal angle-to-iridocorneal angle diameter(ATA).RESULTS:CLR was negatively correlated with ACD(r= -0.706, P<0.01)and vault one year after the operation(r= -0.509, P<0.01); however, it was positively correlated with LC(r=0.667, P<0.01). There was no correlation between CLR and hWTW(r=0.123, P=0.275), ATA(r=0.208, P=0.065)and hSTS(r=0.147, P=0.194). One year after the operation, there was a positive correlation between the vault and ACD(r=0.680, P<0.01).CONCLUSION:CLR has obvious correlation with ACD and LC, arch height after PPC-ICL and has a specific effect on the prediction of the vault after PPC-ICL implantation.