Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2020, Vol. 34 ›› Issue (2): 36-41.doi: 10.6040/j.issn.1673-3770.1.2020.008

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Lens vault changes and associated factors after implantation of implantable collamer lenses with central flow

WAN Bo1,2, LI Donghui1, LUO Yan1, LI Ying1   

  1. 1. Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China;
    2. Beijing Luhe Hospital, Capital University of Medical Sciences, Beijing 101149, China
  • Published:2020-04-07

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Abstract: Objective To investigate the changes to the lens vault(LV)and anterior chamber structures after implantation of implantable collamer lenses(ICL)with central flow in patients with myopia. The relationship between LV and its associated factors, both preoperatively and postoperatively, will also be analyzed. Methods One hundred and forty eyes of 72 patients who underwent ICL implantations were enrolled between January 2015 and January 2017. Visual acuity, intraocular pressure(IOP), corneal endothelial cell count(ECD), refractive outcomes, LV, and other anterior chamber structures were evaluated and compared after 1 week, 1 month, 3 months and 1 year, postoperatively. We analyzed the relationship between LV and other anterior chamber structures. Results After 1 year, 73% of eyes had gained 1 or more lines of corrected distance visual acuity, progressively fewer eyes had gained an uncorrected distance visual acuity above 20/20, more than 63% were within±0.5 D of the prospective mean refractive spherical equivalent(MRSE), and more than 86% were within±0.1 D of the prospective MRSE. There were no significant differences in MRSE, IOP, and ECD, postoperatively(p>0.05). No complications occurred during the postoperative time. There were no significant LV differences at 1 month and 3 months postoperatively. Meanwhile, LV had decreased significantly in the first postoperative year and was negatively correlated with age, keratometric power, 500 μm angle open distance, 500 μm trabecular iris space area, and the anterior chamber angle. LV was positively correlated with the white-to-white distance, angle-to-angle distance, anterior chamber depth, axial length, and ICL length. Axial length and ICL length were independent factors of LV. Conclusion Implantations of phakic ICL with center flow are safe, effective, and predictable in correcting myopia. LV decreased significantly at 1 year postoperatively, which correlated with multiple factors, both preoperatively and postoperatively.

Key words: Myopia, Implantations of implantable collamer lens with central flow, Lens vault, Anterior chamber structures, Optical coherence tomography of anterior segment

CLC Number: 

  • R772.2
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