With two team golds already to his name, the 26-year-old South Korean archer, who is legally blind, refuses to wear corrective glasses or contacts or have surgery. With the target lines blurred, he relies on muscle memory. ''Archery requires very sensitive muscles,'' he's said. ''I used to play football at school, and I enjoyed really physical sports, but I now try to avoid any sports that might build up different muscles. That might have a negative impact on my archery.''
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A legally blind archer, a double amputee, a 71-year-old equestrian, and more fascinating competitors we're hoping to see on TV