If you are looking at the specific menu options on a high-definition 1080p physical release or digital download, there are two substantial behind-the-scenes "pieces" or featurettes included on the disc:
: One woman feigns blindness so she can be quarantined with her infected husband. She becomes the only sighted person in a terrifying world of darkness. Blindness [1080p] 2008
(1080p, ~36 mins): A deeper examination of filming the final sequences of the movie and wrapping up the production. If you are looking at the specific menu
: Inside the facility, an abusive group led by the self-proclaimed "King of Ward 3" hoards the meager food rations and terrorizes the weak. 🎬 Key Cast Blindness [1080p] 2008