Baby’s dark brown eyes suddenly turn indigo blue after antiviral treatment against COVID-19. But why?

two photos show a close up of an infant

A 6-month-old boy’s brown eyes turned a deep indigo blue color after he was given the antiviral favipiravir to treat COVID-19. This case is unusual, but it’s not the first time doctors have reported that a patient’s eyes have changed color after prescribing favipiravir for COVID-19. So what could be causing this bizarre effect? First, … Read more