How do medications treat viral eye infections?

Corticosteroid eye drops can be prescribed for cases in which blurred vision or sensitivity to light becomes severe enough to interfere with day-to-day life, but in most cases no treatment is needed. In the cases where it is considered necessary, antiviral medication, taken through the mouth or with eye drops, can stop the progression of long-term infections, staving off blindness and damage to tissues of the eye.