He has been to the vet. The cat is a stray probably around 16 years old years. He showed up at my door 2+ years ago with a bad sinus infection and very frail. The infection was treated and it got better but he has never been in good health and was prone to coughing. Recently his sinus infection flared up came back with a vengeance, and he stopped eating. I took him to the vet. They didn't think he could recover. But they also didn't know what was wrong with him without doing tests. I couldn't afford test because my credit cards are maxed out. They gave me prednosione. He is largely comatose , but he still eats pretty good. And he's maintaining his 8 pound weight. So I don't think it's cancer. I have had a cat die of cancer, and she lost weight. He went blind in one of his eyes literally overnight this week. So that's a clue. Maybe it's his liver, or a tumor? I'm wondering if there's any other treatment we can try? I am willing to try and save him if it won't break the bank.It will cost me another $62 just to walk into the vet office to ask this question. Any ideas?