Many sports, such as golf, require unconventional head and eye positions. We asked: do various positions of the head, namely, tilt (golf putting posture) and head turn (looking over the shoulder) influence stereopsis?
Methods: the Howard-Dolman device was used to quantify threshold binocular depth perception. Thirty subjects were asked to perform the stereopsis task in three different positions (primary position, head tum, and head tilt).
Results: a significant change in stereopsis was found between the different head positions. An unexpected result was also found: experienced golfers show much improved stereopsis in the head tilt position compared with non-golfers.
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