It has been anywhere from 4-6 days since I gave la-200 to my pinkeyed friends. The 2 calfs that had the clouded eye, the tearing/weeping seems to have improved but the cloud isn't going away. When can I expect this to clear? In one of the cases there is a red ring around the cloud. Does that mean the eye has ulcerated? If so, and the eye has ulcerated is the animal perminately blind? After the shots should I still put the NFZ powder in the eyes?