Backfright 

The fear that someone will grab you from behind when you can’t see.

Emily ran really fast out of the kitchen because it was dark and she had backfright.

Backfright by cljlne6 December 23, 2021

Backright 

The action made when one types very vast and then uses the back key (arrow) to respell the word right.

I could hear in the background how you had a problem with spelling,,, You had at least three backrights!

Backright by Usswede February 24, 2009

backlight blindness 

loss of night vision by using an elecronic device with a backlight in an otherwise dark area

I was listening to my iPod last night, but it gave me a serious case of backlight blindness.

backlight blindness by deliqueena April 4, 2009