The document discusses the theme of sight and blindness in William Shakespeare's play King Lear. It explores examples of both physical and metaphorical blindness through the language and imagery used. Key examples include King Lear initially failing to see the truth about his daughters, and eventually gaining new sight after experiencing madness and being deceived. The physical blindness of Gloucester represents the metaphorical blindness that plagues both him and Lear, as they are unable to see the goodness in some children and the evil in others until it is too late.