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A customer reported corneal edema appeared on the first day after a cataract surgery, the patient reported that his vision was unclear.The patient was treated with antibiotic drops.The symptoms of corneal edema were relieved after medication, and vision was improved.
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The customer did not retain the product lot information, therefore the device history records traceable to the reported procedure pack could not be reviewed.The sample was not received at the investigating site for this complaint report; visual inspection or functional testing could not be conducted.If a sample is returned at a later date, the investigation will be reopened and the sample will be evaluated.The root cause of the customer's complaint could not be established as a sample has not been received.Without analysis of the sample, it is not possible to isolate the root cause.As the root cause is unknown, the relationship, if any, of the device to the reported incident cannot be determined.After an investigation of this complaint, it has been determined that no action will be taken at this time as a sample was not returned and no root cause could be established.Quality assurance has reviewed this complaint and will continue to monitor data for evidence of adverse trending and take further action, as appropriate.The manufacturer internal reference number is: (b)(4).
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