Goalball is a competitive team sport designed specifically for blind athletes. It was 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.
The sport is traditionally played by having two teams of three players with a maximum of three substitutes on each team. The aim of the game is to score a goal by bowling the ball along the floor so that it crosses the goal line of the opposing team. You must try and control the ball and attack by bowling the ball back again thereby in the other goal. Players must use the sound of the bell to judge the position and movement of the ball.
The game consists of two 12-minute halves. Eyeshades must be worn for partially sighted players to ensure complete coverage of the eye to be on equal footing with blind players. Eye patches may be worn under eyeshades to ensure complete coverage of the eye, and prevent any vision should the eyeshades become dislodged.