United States runner Marla Runyon has been legally blind for 22 years. Even so, she competed in the 2000 Summer Olympic Games in Sydney, Australia. In fact she qualified for the finals in the 1500 meter race. (Marla finished eighth, three seconds behind the medal winners.)

How does she do it? Marla can't see in color, and what she does see is just a fuzzy blob. In a race she just follows the blob of figures in front of her. She told TV commentator Tom Hammonds that the real difficulty was in rounding the final turn and "racing toward a finish line that I can't see. I just know where it is."