Vergence

Brendok being a vergence also ties into Mae and Osha's birth's third episode, "Destiny", Mother Aniseya reveals that she bore the twins, yet they have no father.

The Coruscant Jedi Temple was located on top of a vergence.

This vergence was probably the reason Palpatine had the Separatists sent to Mustafar before ordering Vader to kill them - unaware his new apprentice would soon fall in battle with Obi-Wan Kenobi there.

Torbin loses it and goes to retrieve the girls as they can prove there's a vergence on Brendok, allowing the Jedi to finally return home (whether Aniseya's interference made him act so irrationally is hard to say).

Eye movements can therefore be either conjugate (in the same direction such as saccades or smooth pursuit ) or disjunctive (such as vergence eye movements).