 B3 is a disability sport classification for people who have partial vision . The International Blind Sports Federation ( IBSA ) defines this classification as " From visual acuity above 2 / 60 to visual acuity of 6 / 60 and / or visual field of more than 5 degrees and less than 20 degrees . " The Canadian Paralympic Committee defined B3 as " No more than 10 % functional vision . " Competitors in this class " can make out shapes with the help of glasses " . 
