Someone has posted about a personal case of vision deterioration after taking lumina and a proposed mechanism of action. I learned about lumina on lesswrong a few years back, so sharing this link.

https://substack.com/home/post/p-168042147

For the past several months I have been slowly losing my vision, and I may be able to trace it back to taking the Lumina Probiotic. Or rather, one of its byproducts that isn’t listed in the advertising

I don't know enough about this to make an informed judgement on the accuracy of the proposed mechanism. 

Did you end up using metal halide fittings? If yes, how did that go?

After recent research finding Opsin-5 present in multiple tissues, sensitive to ≈380nm, I'm considering options that have different emission spectra from typical LED lighting to potentially shore up gaps.

fwiw I made my account in January, which I guess is still very new relative to average age of account here but hopefully means you can trust I didn't make this account just to drop a link to the lumina post.