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Sight Classification System

The classifications was first created by the IBSA in the 1970s, and has largely remained unchanged since despite an effort by the International Paralympic Committee (IPC) to move towards a more functional and evidence-based classification system. Classification is often handled on the international level by the International Blind Sports Federation (IBSA) but it sometimes handled by national sport federations.

B1- B1 is a disability sport classification for people who are considered blind.The International Blind Sports Federation (IBSA) defines this classification as visual acuity poorer than LogMar2.60

B2- B2 is a disability sport classification for people who are visually impaired.The International Blind Sports Federation (IBSA) defines this classification as "visual acuity ranging from LogMar 1.50 to 2.60 (inclusive) and/or visual field constricted to a diameter of less than 10 degrees." It thus falls between the B1 and B3 classifications.

B3-  B3 is a disability sport classification for people who have partial vision.The Interantional Sports Federtaion(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.

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