Mandy Patinkin

The ‘Princess Bride’ star underwent two corneal transplants to help him see after he was diagnosed with keratoconus – a degenerative eye condition – in the 1990s.

He became an advocate for organ donation after his procedures.

He said: "What are you gonna do after you go?

"What are you gonna do with the part [of your body]? Let somebody improve the quality of someone's life. It's an extraordinary gift, and a wonderful way to live on."