[@floodtalon]

I can give you some examples based on Eos and how she works to avoid burn out from overusing her Silver Eyes. Henry would likely not benefit from these users but that's valid as example. Just let me get back home and I'll se about it.

[@Banana]

Krieg still has his Golden Eyes, once again, he just don't know very well how to use it.

[@Silvan Haven][@BCTheEntity]

The most radical it's for the Eyes generally come at great cost to the user. Up to and including losing them if they get too burnt. Maybe even things that are worse than death. That's why Henry got bit in the ass more than once up to now.