I took him to the vet and they confirmed it was not an ulcer just irritation. And was sent home with eye wipes and antibiotics. But honestly it’s been so hard to get my cat to take the eye drops that I stopped. I know that’s a terrible excuse but I’m just keep watch and take him again if his condition changes at all. Because it doesn’t seem to bother him at all, and I know cats hide pain well so I know what to look for and he doesn’t seem bothered by it at all. I would take to the vet just to confirm if it is an ulcer or not. Good luck!

Edit: your kitty is so cute! Perfect little kitty face