Hanz Lorenzen

Goalball is a team sport designed specifically for blind athletes, originally devised in 1946 by the Austrian Hanz Lorenzen and German Sepp Reindle as a means of assisting the rehabilitation of visually impaired World War II veterans. Participants compete in teams of three, and try to throw a ball that has bells embedded in it into the opponents' goal. Teams alternate throwing or rolling the ball from one end of the playing area to the other, and players remain in the area of their own goal in both defense and attack. Players must use the sound of the bell to judge the position and movement of the ball. Games consist of two 12-minute halves (formerly 10-minute halves).Eyeshades allow partially sighted players to compete on an equal footing with blind players. Eyepatches may be worn under eyeshades to ensure complete coverage of the eye, and prevent any vision should the eyeshades become dislodged.

Goalball gradually evolved into a competitive game during the 1950s and 1960s, and was eventually nominated as a demonstration sport at the 1976 Summer Paralympics in Toronto. The sport's first world championship was held in Austria in 1978. Goalball was added to the programme of the 1980 Summer Paralympics in Arnhem, becoming the first Paralympic sport designed exclusively for disabled players.International Blind Sports Federation (IBSA), responsible for a range of sports for the blind and partially sighted, is the official governing body for the sport.

International Blind Sports Federation rules require the field of play to be 18 metres (59 ft) long by 9 metres (30 ft) wide. Goals span the width of the pitch. The court is divided into six even sections, 3 by 9 metres (9.8 by 29.5 ft). At either end, just in front of the goal, is the team area. Beyond that is each team's landing zone. The middle two sections are collectively referred to as the neutral zone.

...
Wikipedia