Help Save Puppy Charlie's Eye

We need some help.  My curious little Charlie got a little too close to kitty and got his left eye scratched up badly. Charlie may lose his eye if we can't afford his surgery.   The vet said Its going to cost around $4000 and we don't have much time. We don't know what will happen if the current meds don't work. Please help any way you can and any amount that exceeds our goal, we will donate to the SPCA.