Abstract:ABSTRACT Objective Detecting the changes of intraocular pressure (IOP) and the shape of the anterior segment after implantation with implantable contact lens (ICL) using ultrasound biomicroscopy(UBM) to explore the efficacy and safety of central pore type V4cICL in correcting the high myopia. Methods From January 2015 to January 2016, 18 patients (36 eyes) underwent a new type of Central V4cICL operation in our hospital. UBM was used, preoperatively and 3, 6, 12 months postoperatively, to detect the Anterior chamber depth, ICL-vault, AOD500 and AIT in 4 angles from upper, lower, nasal and temporal side, and central lens thickness. Results Significant difference was found in Anterior chamber depth after surgery comparing to those in preoperative group and no significant difference was found between any postoperative groups. There was no significant difference in postoperative ICL-vault values. Significant difference was found of AOD500 and AIT in 4 angles from upper, lower, nasal and temporal side and no significant difference was found between any postoperative groups. No significant difference in ICL distance from the anterior surface of the lens and intraocular pressure was found between these groups. Conclusion The lens using new type of central pore type V4cICL surgery was stable in the intraocular position. No significant changes were found in the anterior segment and intraocular pressure after operation. Central pore V4cICL surgery was safe and effective way for correcting high myopia. UBM was an effective, simple and reproductive way to safely evaluate ICL surgery, which can be considered as an ideal method in clinical trials.