1155
However , early on , when the toxic optic neuropathy is mild and partly reversible , the funduscopic findings are often subtle and easy to miss .
 Disease: optic neuropathy
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