In the early summer of 2009, Ross Anderton woke up one morning with a puffy eye. He was 16 months old. His mother, Lesley — not a woman given to worrying about “every little sniffle” — was sufficiently concerned about her son to take him to the GP. “He’s got a blocked tear duct,” the GP said: mother and son were sent on their way. The next day Ross’s eye swelled some more. A week later it was starting to bulge out of its socket. The GP, though, stuck to his tear duct theory, referring Ross to the eye pavilion — and its 18-week waiting list. It was only on July 31, six weeks after his mother had first taken him to the GP, that