The reporter indicated the surgeon implanted a 13.2mm vticmo13.2, -16.0/+2.0/169 (sphere/cylinder/axis), implantable collamer lens in the patient's left eye (os) on (b)(6) 2015.The lens was exchanged on (b)(6) 2015 with a same model and size, different diopter lens due to refractive surprise.The problem was resolved.
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(b)(4).Results: visual inspection of the returned product found one haptic torn.The lens was returned dry.The lens was rehydrated in bss for re-measurement.The lens length, width, diopter power and sphere were measured and the results of the measurements were compared against the original values and the lens was found to be in specification.Medical review - several factors may be involved in a post-operative refractive surprise, including inappropriate refractive surgical planning, a wrong lens calculation/selection, preoperative inaccurate determination of the eyes measurements to determine the power of the icl, induced refractive change by incisions, unstable cornea and/or refraction prior to implantation, cl-induced warpage, wrong lens, upside-down lens, misaligned lens, rotation, tilting, etc.Conclusions: based on the complaint history, work order search, medical review and the evaluation of the returned product, a specific root cause of the event could not be determined.Claim # (b)(4).
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