3890
This case and a review of the literature show the severe and unpredictable nature of ethambutol toxicity and its potential for irreversible vision loss despite careful ophthalmologic monitoring .
 ethambutol toxicity, ethambutol; vision loss, 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:
 ethambutol toxicity, ethambutol; vision loss, ethambutol