Amniotic membrane transplantation
Human amniotic membrane is presumed to suppress
inflammation and formation of fibrovascular tissues
and has been used with success to cover the bare
sclera after pterygium excision. It serves a useful
alternative to conjunctival tissue in situations where
there is a large conjunctival defect and shortage of
healthy conjunctival tissue to cover the bare sclera
commonly seen in multi recurrent pterygia. AMT
is especially useful in patients that have undergone
previous conjunctival autografting and in those with
glaucoma with a need to preserve conjunctiva for
potential future use. In comparison to keratoplasty,
amniotic membrane unlike donor cornea has no
human leucocyte antigens and therefore carries
no risk of rejection but like donor cornea, there
is need to screen for infections. Human amniotic