AUTHOR=Jiang Yang , Luo Yan , Li Ying , Lu Thomas 

TITLE=The long-term observation of the rotation of implantable collamer lens as the management of high postoperative vault

JOURNAL=Frontiers in Medicine

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2023.1104047

DOI=10.3389/fmed.2023.1104047

ISSN=2296-858X

ABSTRACT=<sec><title>Purpose</title><p>This study aimed to describe the effectiveness and stability of implantable collamer lens (ICL) rotation in reducing high postoperative vault.</p></sec><sec><title>Setting</title><p>This study was conducted in the Peking Union Medical College Hospital, Chinese Academy of Medical Sciences.</p></sec><sec><title>Design</title><p>This is a retrospective case series.</p></sec><sec><title>Methods</title><p>Twenty-two eyes from 22 patients who had ICL (V4c EVO) implantation with high postoperative vault (&gt;=750 μm) were recruited for our study. All the lenses were rotated from a horizontal to an oblique position. The vault, SSA, AOD500, AOD750, TISA500, and TISA750 at 180° and 0° were measured pre-rotation, 1-week post-rotation, and in the at-least 1-year-follow-up.</p></sec><sec><title>Results</title><p>Twenty female patients and two male patients were recruited, with a mean age of 28.68 ± 6.08 years. The mean vault had declined significantly from 951.81 ± 154.26 μm pre-rotation to 772.27 ± 119.40 μm 1 week post-rotation (<italic>p</italic> &lt; 0.001). The SSA, AOD500, AOD750, TISA500, and TISA750 at 180° and 0° pre-rotation and 1-week post-rotation were 30.40 ± 7.91° and 45.14 ± 6.75°, 32.37 ± 7.48° and 46.23 ± 6.39°, 303.27 ± 87.99 and 522.45 ± 122.16 μm, 323.81 ± 89.15 and 536.13 ± 121.66 μm, 387.95 ± 99.43 and 630.81 ± 133.59 μm, 435.68 ± 106.72 and 643.36 ± 132.82 μm, 0.109 ± 0.034 and 0.202 ± 0.053 mm<sup>2</sup>, 0.123 ± 0.034 and 0.212 ± 0.051 mm<sup>2</sup>, 0.194 ± 0.056 and 0.345 ± 0.083 mm<sup>2</sup>, and 0.216 ± 0.055 and 0.358 ± 0.079 mm<sup>2</sup> (all <italic>p</italic> &lt; 0.001). The mean vault value had changed from 747.50 ± 116.07 μm 1-week post-rotation to 586.87 ± 132.65 μm in the 1-year follow-up. However, the SSA, AOD500, AOD750, TISA500, and TISA750 at 180° and 0° had remained stable (<italic>p</italic> &gt; 0.05).</p></sec><sec><title>Conclusion</title><p>Non-toric ICL rotation is a novel and effective technique in the treatment of high postoperative vault. Our results are more robust given the extended period of follow-up.</p></sec>