7187
The most commonly recognized toxic effect of ethambutol is optic neuropathy , which generally is considered uncommon and reversible in medical literature .
 optic neuropathy, ethambutol
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 optic neuropathy, ethambutol