@madieblue

If I’m understanding correctly, “so far so good” after a CT scan means that you’ve been told that no evidence of cancer was found, and that continuing on Keytruda for maintenance is still the plan.
I am wondering whether the CT was done before or after the vision challenges showed up. When new symptoms crop up, the question that often arises in the back of my head is whether this represents a recurrence, a metastasis, a side effect of the treatment or something completely unrelated that may be due to aging, to genetics, to benign but annoying growth, a new cancer emerging, exposure to a microbe or other toxin, etc. It’s a heavy thing to hold so many possibilities as a result of one set of symptoms and truly reflects what it is to be surviving cancer. I send hugs.

I do hope the CT results are reassuring and that your ophthalmologist can give you clarity and suggest a plan that takes you toward reliably clearer vision. Wishing you well with this! Thank you for sharing, as it gives me data points for a possible path on my journey.