Sight

• 'Dearer than eyesight, space, liberty' - Goneril's words to her father in 1.1. When she later calls for Regan and cornwall to pluck out cornwall's 'vile jelly' - it is clear that this is pre-meditated as she recognises sight to be of the most valuable senses
• 'To see him in my touch' would be enough to say 'i had eyes again' - Gloucester voices his desperation to touch his son once more, renders Edgar's refusal to reveal his identity all the more cruel