Para-swimming

S/SB11-13 - vision impairment 

Athletes with a vision impairment compete in three sport classes from S/SB11 to S/SB13. S/SB11: These athletes have a very low visual acuity and/ or no light perception. S/SB12: Athletes have a higher visual acuity than athletes competing in the S/SB11 sport class and/ or a visual field of less than 5 degrees radius. S/SB13: Athletes have the least severe vision impairment eligible for Paralympic sport. They have the highest visual acuity and/or a visual field of less than 20 degrees radius. In order to ensure a fair competition athletes in the S/SB11 sport class are required to wear blackened goggles. To ensure safety all S/SB11 swimmers must use a tapper, swimmers in the S/SB12 and S/SB13 sport classes may choose whether or not they wish to use one.