This man can see again, thanks to a tooth implanted in his eye

When Brent Chapman was 13, he took ibuprofen – something he had done several times before – during a Christmas basketball game. What happened next was anything but routine: He had a severe reaction that caused burns all over his body, including on the surface of his eyes.

​ When Brent Chapman was 13, he took ibuprofen – something he had done several times before – during a Christmas basketball game. What happened next was anything but routine: He had a severe reaction that caused burns all over his body, including on the surface of his eyes. Read More Breaking News, Latest News and Videos | CNN