The problem is the secondary infections, which you try to treat with
antibiotics. But the other big problem is a cat with
a stuffed up nose WON'T EAT. They can't smell their food, and feel sick, so they have no real appetite. Here's what you can do to try to get your cat through this;
First, keep treating with the antibiotics for any infections. Clean it's eyes regularly if needed with a damp washcloth, but don't rub hard, be gentle.