Help Messi the cat to see without pain

We had our cat Messi since he was 8 weeks old. He’s 15 years old. July 2, 2025 he stopped eating and had discharge from one eye. I took him to the eye doctor for animals, and they said he's in a lot of pain from inflammation in the eye and glaucoma and she’s suspecting cancer. The doctor said this eye needs to be removed so the cancer doesn’t spread. I'm a single mom to 2 kids, and my budget can't handle the additional expense for surgery to remove this eye. Me and my kids would appreciate support to help take care of this surgery for Messi.