Journal of cataract and refractive surgery · 2025
Using first-eye early vault to determine implantable collamer lens size for the second eye: retrospective analysis of bilateral phakic intraocular lens implantation.
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Li Honglei, Liu Dongle, Zhang Jinyan, Dai Yunhai, Wu Xiaoming
Аннотация
PURPOSE: To evaluate the role of first-eye vault after the implantation of implantable collamer lens (ICL) V4c in selecting ICL size for the second eye and analyze the changing characteristics of the vault.
SETTING: Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China.
DESIGN: Retrospective case series.
METHODS: In this retrospective study, 509 patients (1018 eyes) receiving bilateral ICL V4c implants were evaluated. The surgical management method was as follows: The vault was measured at 2 hours after the first-eye surgery, and we selected ICL size for the second eye based on the vault of the first eye. The bilateral vault was measured and evaluated between different periods of follow-up.
RESULTS: The rate of ICL realignment or exchange due to abnormal vault was 1.47% (15/1018), with the second eye showing a significantly lower incidence (0.39%) compared with the first eye (2.55%) ( P < .01). Patients were categorized into 4 groups based on the vault value obtained at 2 hours postoperatively (baseline). There was significant difference in the value of vault decrease among the 4 groups at 1-day, 1-week, 1-month, and 3-month follow-ups (all P < .01). There was a significant positive correlation between the decrease in the vault and the baseline vault (all P < .01).
CONCLUSIONS: Selecting the ICL size for the second eye based on the first eye's vault measurement 2 hours postoperatively can effectively minimize the need for further surgeries. Notably, eyes with a higher initial vault experienced a more pronounced decrease.
SETTING: Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China.
DESIGN: Retrospective case series.
METHODS: In this retrospective study, 509 patients (1018 eyes) receiving bilateral ICL V4c implants were evaluated. The surgical management method was as follows: The vault was measured at 2 hours after the first-eye surgery, and we selected ICL size for the second eye based on the vault of the first eye. The bilateral vault was measured and evaluated between different periods of follow-up.
RESULTS: The rate of ICL realignment or exchange due to abnormal vault was 1.47% (15/1018), with the second eye showing a significantly lower incidence (0.39%) compared with the first eye (2.55%) ( P < .01). Patients were categorized into 4 groups based on the vault value obtained at 2 hours postoperatively (baseline). There was significant difference in the value of vault decrease among the 4 groups at 1-day, 1-week, 1-month, and 3-month follow-ups (all P < .01). There was a significant positive correlation between the decrease in the vault and the baseline vault (all P < .01).
CONCLUSIONS: Selecting the ICL size for the second eye based on the first eye's vault measurement 2 hours postoperatively can effectively minimize the need for further surgeries. Notably, eyes with a higher initial vault experienced a more pronounced decrease.