Be sure to put emphasis on senses that are not sight. Maybe if its the sheep's POV take it on a walk through the woods, or have it make an unlikely friend that sheep normally wouldn't befriend if they could see them. If its someone else's POV such as a farmer write about the struggles they have with the sheep and how they help it learn to get around or not bump into stuff. Maybe have it befriend a bat or some other nearly blind creature.