Mother wants son to see bio parents while he can

Doctors say adopted Chinese boy with rare disorder will go blind by time he turns 20

A Seattle mother traveled more than 9,100 kilometers to Shanghai in hope of finding the biological parents of her adopted son before he goes blind.

Molly Sano, who arrived in Shanghai on Monday, decided to make the journey after her 3-year-old son, Bennett, was diagnosed in December with Usher syndrome, a rare but incurable genetic disorder.