Original articleCorrelation between Preoperative Biometry and Posterior Chamber Phakic Visian Implantable Collamer Lens Vaulting
Section snippets
Materials and Methods
The present study was a retrospective chart review that initially included 213 eyes from 124 consecutive patients who underwent Visian ICL (V4 model) implantation for the correction of myopia. Inclusion criteria for patient selection included a postoperative follow-up period of at least 6 months; availability of preoperative and postoperative ultrasound biomicroscopy (UBM) data; no adverse event during surgery; and no abnormal sulcus structure, such as an iridociliary cyst. Of the initially
Results
The mean age of the patients was 32.6 years (standard deviation [SD] 9.3, range 20–45 years), and 57.3% (43/75) of the patients were female. Toric ICL implantation was performed in 26.4% of the patients (34/129) with a mean postoperative follow-up of 17.8 months (SD 12.0, range 6–50 months). The maximum rotational angle of implantation in toric ICLs was 4 degrees. Other baseline clinical characteristics are shown in Table 2.
Table 3 shows descriptive results of 10 preoperative variables. The
Discussion
Many patients with moderate to high myopia and myopic astigmatism may benefit from ICL implantation surgery.2, 14 The resulting ICL vault, however, is difficult to predict precisely.13 Implantable Collamer Lens sizing using UBM-measured STS distance is more accurate than the conventional WTW distance method because the ICL haptic footplates are located on the ciliary sulcus.13, 15, 16, 17, 18 We have used UBM to measure the STS for determining the proper ICL size because we initially started
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Manuscript no. 2010-1533.
Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article.
Funding: This study was supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science, and Technology (2010-0012903). The funding organization had no role in the design or conduct of this research.