Donation
Process
Donor Tissue Becomes Available
When a death occurs, hospitals and other institutions place a call to
one of three organ procurement organizations in HLEB's tri-state area
(Missouri, Kansas and Illinois). They, in turn, pass on information to
the HLEB call center. After gathering initial information, the organizations
work together to educate the family and facilitate consent. If the family
chooses to donate, they will sign a consent form, and the retrieval process
begins.
Retrieval
HLEB eye bank technicians perform one of two retrieval techniques- either
an in situ or whole globe retrieval. During an in situ retrieval only
the cornea is removed, and then placed in storage media. However, during
a whole globe retrieval, the entire eye is removed, and then brought back
to an HLEB laboratory facility for further processing to remove the cornea.
Evaluation
The donor tissue is brought back to the Eye Bank facility for
further evaluation. A high cell count within the cornea is desirable and
indicative of healthier tissue.
A blood sample taken from the donor during the tissue retrieval is sent
out for testing to detect the presence of infectious diseases like HIV
and Hepatitis B and C. All blood samples are tested prior to distribution
to eliminate the threat of infectious disease.
Distribution
After a cornea has been cleared for transplant, the Eye Bank's
Tissue Distribution Coordinator meets surgeon's needs by offering tissue
for transplant. Although corneas can be stored for up to two weeks, U.S.
physicians usually prefer to transplant donor tissue within five days.
|