Beckham’s right eye was removed in 2012 within weeks of when he was diagnosed with retinoblastoma, an eye cancer that most often affects small children.

On the research front, Dr. Arupa Ganguly of the University of Pennsylvania studies retinoblastoma, eye cancer that attacks young children.

After years of observing children with the rare eye cancer retinoblastoma, Alfred Knudson proposed an explanation for how two different forms of it arise.