Background: To evaluate the safety and effectiveness of the Visian Implantable Collamer Lens (ICL) implantation in\nhigh myopic patients with inactive Gravesâ?? ophthalmopathy (GO) by observing the changes of choroidal thickness\n(CT).\nMethods: Eight patients (16 eyes) with high myopia accompanied with inactive GO were selected as the\nexperimental group (group A) and 18 high myopic patients (36 eyes) without GO were selected as a control group\n(group B). The outcomes of uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BCVA), safety\nindex, efficacy index, intraocular pressure (IOP), vault, corneal endothelial count, and choroidal thickness (CT) were\nobserved. The values of CT were measured using swept-source optical coherence tomography (SS-OCT) scans.\nResults: The UCVA and BCVA in all operated eyes were better than that before surgery. The postoperative safety\nindex and efficacy index were 1.23 and 1.19 in the group A, respectively, and 1.26 and 1.21 in the group B,\nrespectively. In both groups, foveal CT increased significantly in high myopic patients at 2 h and at 3 months after\nsurgery, compared to preoperative values. The same tendencies were observed in the inner nasal and outer nasal\nregions...........................
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