By Olivia Wheeler Emmerdale star Laura Norton fought back tears as she opened up about her two children’s rare condition after they were diagnosed with Usher syndrome. The actress, 40, opened up during the emotional first episode of ITVBe’s Drama Queens. The new series, which launched on Wednesday and will air for eight episodes, gives viewers a real-life glimpse into the lives of some of the nation’s favourite soap stars as they give an inside look at their lives away from their characters. During Wednesday’s episode, Laura who plays Kerry Wyatt on Emmerdale, gave viewers a glimpse into her l…