Abstract: Posterior chamber phakic intraocular lens implantation is currently one of the most common refractive surgeries, and its safety and effectiveness have been unanimously recognized. However, there are also some postoperative complications, most of which are related to postoperative vault. Therefore, postoperative vault is an important indicator to evaluate the success of surgery. In clinical practice, we mainly predict postoperative vault through preoperative examination and hope to achieve ideal vault. The emergence of intraoperative optical coherence tomography (iOCT) greatly improves the accuracy of prediction, allowing doctors to observe real-time changes in vault during surgery. With the advancement of technology, it is possible to better adapt to the surgical process, reduce interference with the operator, and achieve better surgical outcomes.

Key words: posterior chamber phakic intraocular lens implantation, intraoperative optical coherence tomography