uh temporary night blindness from white light while flying at night.
There has been debate for years that blue or green light is better than red for illumnation while preserving night vision.
One such discussion. [
cruisersforum.com]
I've always used red myself and never had an issue.
RE: the dim light in a standard 150 overhead instrument panel light - that is why I always used to wear
one of these [
mypilotstore.com] when flying at night. It's a shame that didn't come up in conversation at your departure airport prior to your pre-flight Mark, someone might have sent one of these along with you...