For international competition all players must satisfy the IPC/IBSA sport class of B1, B2 or B3. Prior to competing in IBSA-sanctioned Continental or World Championships, athletes must undergo classification, carried out by an International VI classification panel.

Classification at the world and regional level may only be conducted by “VI international classifiers”. IBSA is fortunate to have at its disposal a pool of expert “VI international classifiers”, all of whom have been certified jointly by IBSA and IPC.

In order to become a “VI international classifier”, potential classifiers (either ophthalmologist or optometrist) must graduate from a classifier certification course approved by IBSA and IPC.

Source: IBSA website