Im Dong-hyun, a legally blind archer from South Korea, helped set the first two world records of the 2012 Olympics in London. In ranking rounds, Dong-hyn broke his own record in the72-arrow individual event and helped set a new record in the team shoot. Dong-hyn, who has just 20 percent vision in one eye and 10 percent in the other, won gold in the team events in both Beijing and Athens. Next up on the Olympics slate is Friday’s opening ceremony. The events will hit full stride on Saturday, with medal events in archery, cycling, fencing, judo, shooting, swimming, and weightlifting.