That happens to me too. My opthalmologist told me some big name for it that I dont remember.

Basically your eyes are responding slower to changes in light. I think it's something that's fairly normal to have happen after having optic neuritis.

It's been snowing a lot here, and everything has been white outside, so when I come inside after being outside, I have to wait at least 20 minutes before my eyes have adjusted to the light inside the house.

It's like wearing my glasses that have the transition lenses...just takes longer for my eyes to adjust than for my glasses to transition to indoor light.