Thomas Cooper, 3, was diagnosed with stage D retinoblastoma after his dad noticed an 'unusual crescent reflection' in his son ...

Sarah, 40, and Ross Cooper, 44, were sitting at the dining table with their two children when Ross spotted a "crescent-shaped ...

A young boy was diagnosed with cancer after his parents noticed a "crescent-shaped reflection" in his left eye. Sarah, 40, ...

Sarah and Ross Cooper were sitting at the table with their children when Ross spotted a 'mirror reflection' in three-year-old ...

A LITTLE boy from Warrington was diagnosed with cancer after his parents spotted a ‘crescent-shaped reflection’ in his left eye.