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:
: The Man with the Black Eye Patch, who provides perspective on their dire reality. 📀 The "1080p" Blu-ray Special Pieces Blindness [1080p] 2008
: Society rapidly breaks down after a contagious plague causes instant blindness. Sufferers are rounded up and locked in a derelict mental asylum by the government. If you are looking at the specific menu
(1080p, ~55 mins): A look at the themes, the process of training actors to behave authentically blind, set construction, and the challenges of adapting the novel. Blindness [1080p] 2008