My ophthalmologist recommends I use a night light at bedtime. I'm an older woman, diabetic (but controlled with medications), and nearsighted (myopic) -- though as I get older, this is becoming less of a problem. I also have the beginnings of cataracts, but just the beginning -- no need to do surgery.
Why did he recommend I use a night light? I can't find any discussion indicating this would be of help to an old woman; I did see an article stating the possibility of myopia resulting from early (under 2 years old) use of a night light, but that certainly wouldn't matter to me today.