Sometimes no. We have a lot of pink eye survivers with tiny scars. Vets used to prescribe something with a steroid in it that one injected in the eye. That helped, but I don't think they do it any more. Now we find patches to help more than anything else. I don't even know if LA-200 really works. Years ago they used to inject the eye with evaporated milk! The ranchers who did that, some of them, still swear by it! This makes me wonder if there isn't really anything effective a person can do after putting on a patch. We irrigate the eye, look for stickers, use vetricyn opthalmic spray, and patch everything.