A mum detected her son's rare cancer using the flash on her mobile phone camera.<br /><br />Sarah Hedges, 40, was cooking shepherd's pie for dinner when she looked across at son Thomas, three-months-old, and saw a "white glow" in his eye.<br /><br />The mum-of-four said it was reflecting the light "like a cat's eye" and took photos with the flash turned on using her phone to see if she could spot it again.<br /><br />She Googled what she saw - and reports said he might have cancer - so she showed the photos to her GP.
