This can go from blindfolds, that have a bit more significance in the work, or characters being actually blind, like in the works by Voculus,
Karen – Roping Around by MonsterP63
Karen – Roping Around by MonsterP63 Original on mp63.ca Archived Version Another lovely little latex bondage story by MonsterP63 following Karen getting to hang around a bit, completely tied up with a multitude of ropes, as well as a lot of latex. She let out a long and soft moan, but it was only in her head. Her mouth, packed with an overinflated gag didn’t let any sound through. ...