A pilot prospective study based on scanning OCT: the intraoperative vault model predicts postoperative vault

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Medical Imaging

Background:

• Implantable collamer lens (ICL) surgery is a refractive procedure.
• Accurate vault measurement is crucial for ICL outcomes.
• Optical coherence tomography (OCT) offers real-time imaging capabilities.

Purpose of the Study:

• To evaluate the correlation between intraoperative vault (measured by OCT) and postoperative vault after EVO ICL implantation.
• To assess dynamic changes in vault height during the early postoperative period.

Main Methods:

• Prospective observational study involving 14 patients (27 eyes) undergoing EVO ICL implantation.
• Intraoperative OCT used for real-time vault measurement.
• Postoperative vault measured using CASIA-2 at 2 hours, 1 day, 1 week, and 1 month.

Main Results:

• Strong correlation (r²=0.827) between intraoperative and 2-hour postoperative vault.
• Mean intraoperative vault: 937.30 ± 402.27 μm.
• Progressive vault decrease observed postoperatively, reaching 675.98 ± 224.34 μm at 1 month.

Conclusions:

• Intraoperative OCT vault measurements are a reliable predictor of early postoperative vault.
• Vault height decreases in the early postoperative period following EVO ICL implantation.