Method: medical review, device history record review.Results: medical review - according to use fmea (failure modes and effect analysis) it has been determined that excessive vaulting is a consequence of a wrong lens use failure mode (i.E.Improper white to white measurement, variability of the white to white measurements based upon different techniques utilized, improper sulcus to sulcus measurement (if ubm used), and patient condition; poor correlation of white to white measurement and length of ciliary sulcus in an individual case; irregular ciliary sulcus or ciliary sulcus cyst).Abnormal anatomy of the posterior iris/ciliary body/zonules complex would interfere with normal positioning of the icl footplates.A review of the device history record was performed and nothing was found in the manufacturing process of this lens that was the root cause of the complaint.Conclusions: based on the complaint history, work order search, device history record review and the medical review, a probable root cause of excessive vaulting has been determined to be related to the inaccuracy of the white to white measurement or a mismatch between white to white and the sulcus to sulcus diameter.(b)(4).
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