The first blind climber ever was Erik Weihenmayer in El Capitan in a day On 26th September 2016. Elite team of climbers and mountaineers accompanied him, including Hans Florine, who had a record 177 times to climb El capitan. The team chose the route of East Buttres, the shortest one to el cap with 11 pitches and 1,500 vertical feet.
He was not worry about the duration. He and team set a blistering speed and passed another climbers on the road and reached the top in a short time at 3 Pm. It was around eight hours after they started. Weihenmayer had trained and enhanced his technique to chose the suitable approached and learned on Aconcagua that someone walked over though snowy.
He mittigated the potential damage for himself by walking in single way between two teammates who guided him in front of him. He kept one hand on that bags' friend. It was really struggle for him, so he never come up with this idea.