Userid,
What ends up in the Autopsy Report is subject to legal and discretionary decisions. Different states have different rules on what can be identified in an Autopsy Report. So photographs are meant to stay private which is why there has been no sanctioned release of JonBenet's genital injury photographs. Again consider the size-12's and the longjohns, there is no requirement to release these.
Redaction normally only applies to copies made public, not to the original. There are grey areas, consider what Coroner Meyer stated to Det. Arndt during the autopsy regarding JonBenet being
Digitally Penetrated and subject to
Sexual Contact later confirmed at a
second examination. neither of these observations made it into the Autopsy Report that was made public.
here is an example of alleged redaction by a medical examiner:
Chester Bennington's Previous Suicide Attempt Redacted From Autopsy Report | iHeartRadio
If material has the property of being
birefringement then Coroner Meyer will have read the results of the Lab Test saying so, which will have identified the material as each material has a specific spectral identifier allowing determination of its makeup.
If you have a reference stating Coroner Meyer could not identify the
birefringement material please post it so we can adjust our interpretation of the evidence.
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