jake endured e chemo and laser treatment to save the right one. but the cancer kept coming back. >> after about eight times of that happening, the doctors finally said, listen, we pretty much exhausted all treatment options. >> he was 12 when he found out he would lose his other eye. . but former usc head coach pete carroll heard jake's story. he knew the boy was a huge lifelong fan and invited him to meet the team. >> that team was there for me in the darkest hour. it's something i will always be grateful for. >> jake played football in high school despite losing his sight. >> a lot of it is just feel. >> he brought that talent to usc as a walk on player for his beloved team. >> i went in to playing football that i had nothing to lose. life is unfair and taught me to keep fighting. >> dr. sanjay gupta, cnn.