A 37-year-old male ex-addict to parenteral drugs and diagnosed with chronic hepatitis C virus genotype 4 with low viral load (75,754 IU/ml).
Treatment was established with pegylated IFN alpha-2b (100μg/week) and ribavirin (1g/day).
Two months after the beginning of the treatment she went to the clinic and referred blurred vision and «spots» in the visual field for approximately 10 days before.
The exploration revealed a VA of 0.8 in both eyes and multiple cotton swabs in the posterior pole.
IFN failure was diagnosed and treatment was discontinued.
In successive controls the clinical picture improved and at 3 months had a VA of 10/10 in both eyes and in the FO only a cotton exudate was observed in reabsorption below the left fovea.
