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The ocular myasthenia associated with combination therapy of pegylated IFN alpha - 2b and ribavirin for CHC is very rarely reported ; therefore , we present this case with a review of the various eye complications of IFN therapy .
 ocular myasthenia, pegylated IFN alpha - 2b, ribavirin, CHC, IFN
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 ocular myasthenia, pegylated IFN alpha - 2b, ribavirin, CHC, IFN