Wednesday November 21 at 8:00pm (PG) on Seven

We meet the Bhattachryas brothers, who were both born virtually blind. Now two cornea transplants offer them the hope of sight.

And five-year-old Luka, who has a very rare type of liver cancer, flies over from Serbia to undergo a groundbreaking treatment.

CHILD IN A MILLION is an award-winning extreme medicine series which looks at the work of pioneering medical teams at London’s Great Ormond Street Hospital and follows the progress of young patients with extremely rare childhood conditions.