The relationship between eye dominance and head tilt in humans

Previous data suggest that vertical imbalances between the eyes produced by lateral head tilt are linked to ocular dominance, but no studies have heretofore objectively measured head tilt in addressing this relationship. Photographic measurements of the head tilt of 70 subjects were made, along with measures of sighting dominance and vertical misalignment during sighting. The analyses revealed that photographically measured head tilt is significantly associated with vertical imbalances during sighting and with sighting dominance. These data support the theory that motoric dominance in humans is partly related to mechanisms underlying postural asymmetry.