Millions watch as two teams push forward against enormous odds.
Both teams are based in the United States, but inquiries have come from Taiwan, Hong Kong, Ghana, Jordan, Russia, and other countries where news reports raise hopes of a miracle cure. The epiretinal chip is best known for having attracted the interest of blind singer Stevie Wonder. Developed by several medical groups, the epiretinal chip is best known for having attracted the interest of blind singer Stevie Wonder. Optobionics Corporation in Wheaton, Illinois, allowed Good Morning America to show an experimental model of its chip being implanted for the first time. But it would not tell whether the vision of any of the three patients improved.