Overview
B2 is a classification used in disability sport to group athletes with a particular range of visual impairment. It identifies competitors who have measurable vision but whose sight is more limited than athletes in the least impaired visual class. The classification exists to make competition fair by ensuring athletes with similar functional vision compete against one another.
Characteristics and assessment
A B2 athlete typically has reduced visual acuity and/or a restricted visual field. Classification is determined through clinical vision tests (measuring acuity and field) and functional assessment by trained classifiers. Classifiers follow international guidelines and may reassess athletes periodically or after medical changes.
How it is used in sport
Various international bodies apply the B1–B3 visual grouping; B2 corresponds roughly to the middle category. In multi-discipline systems this maps to sport-specific classes (for example, track and field and swimming use T/F or S numbers that align with the B categories). Some sports require additional measures to equalize competitors, such as the use of eye shades or sighted guides where appropriate.
Examples and notable facts
- Athletics: athletes with this level of impairment compete in middle classes for visually impaired track and field events.
- Team sports: some blind-sport formats mix B1–B3 athletes but use rules (like mandatory blindfolds) so vision differences do not confer advantage.
- Classification bodies: international federations and national committees manage the testing and assignment process.
Distinctions and purpose
Compared with B1, B2 athletes have more usable vision; compared with B3 they have considerably less. The primary goal is competitive equity: the B2 label helps organizers apply appropriate rules, equipment, and support so athletic performance, not difference in remaining sight, determines outcomes. For more on classification procedures and standards see official classification guidance.