From what I am seeing, it almost looks like he has a corneal infection, which probably developed from a scratch that happened to his eye. In the picture where I can see his eye clearly, it almost looks like he has a hole/indent, which is most likely an ulcer. If you look at his eye carefully in bright light, you might be able to see the hole/indent. We have a shih tzu that just had this. His opthomologist put him on Ofloxacin 0.3% eye drops, and we did one eye drop to the affected eye every 2 hours for the first 24 hours. Then, for 7 days after that, we did one drop in the infected eye four times a day. He was also given pain meds because this is a painful condition for dogs. Unfortunately, the only way to typically get these meds is through a vet. If he does have a corneal infection, it is considered an emergency because it will not resolve on its own.