4Pettit T.H Corneoscleral freehand lamellar keratoplasty in Terrien's marginal degeneration of the cornea-long term results. Refract corneal Surg, 1991,7: 28-32.
8Kamiya K, Hori J, Kagaya F. Preservation of donor cornea prevents corneal allograft rejection by inhibiting induction of allomimunity [ J ]. Exp Eye Res ,2000 , 70 (5) :737-743.
9Ardjomand N, Berghold A, Reich ME. Loss of corneal Langerhans cells during storage in organ culture edium, optisol and McCarey Kaufman medium [J]. Eye, 1998,12 ( 1 ) : 134-138.