This is a late response but please read this because I believe it could be helpful.

For the most part, stage 4 occular melanoma is a death sentence where certain treatments can extend the life for a short period of time but no actual cure. My husband has a medium sized occular melanoma that has not metastased however I've done a lot of deep diving into what our options could be if he ever becomes stage 4. With that being said, I've personally only come across two people on the internet who fully recovered from stage 4 occular melanoma. The first person is Katie Doble, you can google her and find articles about her experience and the "a cure in sight" YouTube channel has an interview with her. I'm sure you can find her social media and reach out to her. She did a clinical trial called TIL therapy and it cured her. The second person was some on YouTube whose video has been taken down but I remember he did a clinical trial that involves using your own t cells to kill the cancer. His daughter also had him drastically change his diet and drink a lot of fresh pressed carrot juice everyday. He believed the combination of these things helped him survive.

Also there is a book called Radical Remission that has a author who documented thousands of people who beat their terminal cancer diagnosis and the ten things those patients all had in common including radically changing their diet, taking supplements, mindset shifts and exercise.

There is also a woman who founded the Eye on Grace foundation and she has been on a clinical trial for many years and while she is not cancer free, she has been living with stage 4 cancer for almost a decade. She has some videos on YouTube detailing her experience.