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PURPOSE : To report a case of bilateral optic neuropathy in a patient receiving tacrolimus ( FK 506 , Prograf ; Fujisawa USA , Inc , Deerfield , Illinois ) for immunosuppression after orthotropic liver transplantation .
 Disease: optic neuropathy; Chemical: tacrolimus; Chemical: FK 506
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: optic neuropathy; Chemical: tacrolimus; Chemical: FK 506