Vision and Gaze
“Recalling existing information is
largely a right-brain task, which means that when we’re trying to
remember something we usually look to the left.
Conversely, we typically look to the
right when trying to construct a description or a story, making
use of the logical powers of the left brain.
To make matters even more interesting, looking
upward suggests that a person is using images or visual memories.
Looking downward is associated with kinesthetic or emotional memories,
Looking directly left or right usually means the person is processing auditory
association between gaze direction and truthfulness [lying]
is a tenuous one. Making up a new sentence doesn’t necessarily involve
making up a new fact, after all.”
Do I lean my head forward/back too much?
Often myopes tend to lean
forward towards things to see them clearer.
Hyperopes tend to lean back or move things further away.
sometimes necessitates looking up or down and causes your eyes to diverge
or converge, leading to accommodation/vergence disruptions.
Be aware of leaning your head forward or back. Often rapid change in
vision occurs simply from correcting poor posture and head position.
In rare cases the head is turned to one side.
convergence and divergence
Krimsky (1948) noted, ‘When looking upwards, the eyes tend to
diverge . . . when they look down, the effort to converge
is much easier.’”
”The eyes also have a resting
point with regard to convergence. With nothing to look at, the
eyes converge to a distance called the ‘resting point of vergence.’
Jaschinski-Kruza (1988) found that convergence plays a larger role in eye
strain at computer workstations than accommodation. He found that those
subjects with ‘far’ resting points of vergence experienced more eye strain
working at a computer 20 inches away than those subjects with ‘close’
resting points of vergence. But even those subjects with close resting
points of vergence had less eye strain viewing the monitor at 40 inches.
As we might suspect, the resting point of vergence also changes with gaze
angle (Heuer and Owens, 1989). Horizontally, that resting point averages
about 45 inches.
Looking upward 30-degrees, the resting point of vergence goes out to
about 53 inches [not good].
But with a 30-degree downward gaze
angle, it moves inward to 35 inches.”
*‘categories of gaze’, ‘positions of gaze’, ‘gaze angle’, ‘looking