Fig. 2

Pedigrees of 10 families with exotropia. Excluded participants are marked with an “X”. Affected individuals are represented by symbols with a black fill, with border colors indicating the type of exotropia: intermittent exotropia (IXT) is marked by a red border, and constant exotropia (CXT) is marked by a green border. Unaffected individuals are shown as unfilled symbols. Individuals with unknown diagnostic status are shaded in gray. Males are depicted as squares, and females are depicted as circles. Arrows indicate the probands