Who is Dr. Giunio Falci from Eleven Short Stories = Undici Novelle and what is their importance?

Dr. Giunio Falci is an eccentric eye doctor and the leader of an eye clinic. Dr. Falci has an unkempt appearance and a frank manner of speaking that makes him highly unpopular. He is called as the last resort by the Marchesa in an attempt to cure her blind son.