As the customer did not retain the finished goods lot number, device history record (dhr) and lot history could not be reviewed.The customer reported a fiber in the eye.No sample was returned for this investigation therefore evaluation of the fiber/product could not be performed.It's important to remind the customer an image at a minimum will assist the investigation.The manufacturing area operates in a controlled positive pressure environment and is continuously monitored to prevent entry of foreign material and hair.Additionally, procedures are in place requiring all assembly room personnel to put on a hairnet with an additional hood, as well as a beard cover, when applicable, prior to entering the assembly area.These measures help mitigate the introduction of foreign material and hair into the product.The root cause of the customer's complaint could not be conclusively determined as a sample was not received and the condition of the product could not be verified.No action will be pursued at this time for this occurrence.Complaints are continuously monitored to identify product and/or process areas where debris or hair is occurring.In addition, routine training and awareness is conducted with all manufacturing associates to reinforce the importance of wearing proper personal protection equipment and maintaining clean work areas.The manufacturer internal reference number is: (b)(4).
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