What do I do when Sergeant's Pretect gets in my cat's eyes?

I've treated my young cat with Sergeant's Pretect squeeze-on flea control, but most of the stuff got on his fur rather than his skin though. It leaves an oily residue on his fur, so he's trying to clean it off. I'm afraid of what might happen if he ingests it, and he keeps trying to rub it off with his paws, but its getting around his eye area and now they are both red and watery. Will it cause blindness? I am trying to hold him still and rub it away from his eyes with a paper towel. Will the oily residue dry off? Or do I have to wash it off and waste 30 dollars?