PURPOSE: To compare vaulting changes in eyes implanted with V4c and V4 implantable collamer lenses (ICLs) under differing lighting conditions.
DESIGN: Noninterventional, cross-sectional comparative observational case series.
METHODS: Fifty-six eyes of 38 patients implanted with V4c ICLs, and 54 eyes of 28 patients implanted with V4 ICLs were enrolled and analyzed. Anterior chamber depth, pupil size and postoperative vaulting were evaluated using a Visante optical coherence tomography system under photopic and mesopic conditions 1 month postoperatively. Refractive errors, keratometry values, axial lengths, intraocular pressures, anterior chamber volumes, and central corneal thicknesses were also recorded.
RESULTS: No significant differences were noted in anterior chamber depth between photopic and mesopic conditions in either group. Significant decreases in vaulting and pupil size were detected under photopic conditions in both groups. Moreover, vaulting changes in eyes implanted with V4c ICLs were significantly larger than those in eyes implanted with V4 ICLs.
CONCLUSIONS: V4c ICL vaulting decreased more prominently under photopic conditions than did V4 ICL vaulting. Therefore, postoperative vaulting under mesopic and photopic conditions should be considered when interpreting the vaulting of eyes implanted with V4c ICLs.
Bibliographical noteFunding Information:
All authors have completed and submitted the ICMJE form for disclosure of potential conflicts of interest, and none were reported. This work was partially supported by a National Research Foundation of South Korea (NRF) grant funded by the South Korea government (MEST # 2013R1A1A2058907 ) and by the Converging Research Center Program through the Ministry of Science, ICT, and Future Planning, South Korea (# 2013K000365 ). The authors indicate no conflict of interest. Involved in design of study (H.L., S.Y.K., K.S.K., T.-I.K.); Conduct of study (H.L., S.Y.K., B.H.C., J.Y.C., T.-I.K.); Collection, management, analysis, and interpretation of data (H.L., S.Y.K., K.Y.S., B.H.C., J.Y.C., K.S.K., T.-I.K.); Preparation of manuscript (H.L., S.Y.K., K.S.K., T.-I.K.); and Review or approval of manuscript (H.L., S.Y.K., K.Y.S., B.H.C., J.Y.C., K.S.K., T.-I.K.).
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