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Hello. Thanks for writing in. My name is***** and I would be happy to help you. It sounds very much like he has a URI. I cannot rule out corneal ulcers, but those can be caused by herpes viral infections, which is by far the most common cause of URIs in cats. They usually develop secondary bacterial infections as well. Sometimes it can turn into a pneumonia. I would have your vet check him out and prescribe some antibiotics. He most likely needs to be on a topical antibiotic eye ointment as well. In most cases, these will resolve the signs, but some symptoms are bad enough to require oral anti-viral medication and anti-viral eye medication. I would also consider putting him on 250mg of L-lysine twice daily to booster his immune system to help keep the virus from replicating. You can get this over the counter, but your vet may have an easier formulation for giving to a small kitten. Please let me know if you have any other questions or concerns. Hope this helps.