This supplemental report is being submitted to provide additional information.Olympus medical systems corp.(omsc) reviewed the manufacturing history (dhr) of the subject device and confirmed no irregularity.[conclusion] it could not identify the root cause of the reported phenomenon.[consideration] based on the following information, it was presumed that the cause of the reported phenomenon was that dirt had entered because a gap was created in the adhesive part of the light guide lens due to physical stress or the like.-according to the inspection results of olympus korea, it was confirmed that the light guide lens was dirty.-according to ifu, caution is stated not to apply physical stress.-according to a similar former case, it had been presumed that the cause was the physical stress caused a gap in the adhesive part of the light guide lens and dirt got in.If additional information becomes available, this report will be supplemented.
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