Use Your All Natural Night Vision
Stop stumbling your way back to bed from the bathroom or kitchen. The simple solution is to close only ONE eye when you need to use a light. Then, on your trip back to bed, one eye will still be adjusted to the darkness and you’ll be able to see just fine!
As it turns out, this is the reason that Pirates wore patches over one eye. It allowed them to travel freely above and below deck without having to wait for their eyes to adjust.