Visual Examination Frequency for People Taking Ethambutol for Tuberculosis


Project Status:
Project Line:
Health Technology Review
Project Sub Line:
Summary with Critical Appraisal
Project Number:


  1. What are the evidence-based guidelines regarding the frequency of visual examination for people taking ethambutol as part of a TB treatment regimen?

Key Message

CADTH identified 1 non-Canadian guideline that includes recommendations on the frequency of visual examinations for people with active tuberculosis who take ethambutol as part of their treatment. The guideline recommends testing for visual acuity and colour vision before starting treatment and at every health care visit throughout the course of treatment with ethambutol (recommendations based on clinical experience).