The reasons listed for unwillingness to donate eyes included objection by family members (12 3.4%)), dislike of separating eyes from the body (3 0.8%)), health problems (10 (2.8%)), religious restriction (2 (0.6%)) and family members being unwilling (10 (2.8%)).
Some people consider that, although this method follows the usual method of computer use, it may separate eye-hand coordination.
His face seems constructed by someone playing with the separate eyes, noses, and mouths of a children's mix-and-match book.
When two eyes are employed, two additional factors play a role, the one not very important namely, the act of convergence or divergence of the eyes and the other very important namely, the stereoscopic perception of depth by virtue of the dissimilarity of the images presented by a three-dimensional object, or array of objects, to the separate eyes.
It is at this level that the impulses from the separate eyes meet at common cortical neurons, or nerve cells, so that when the discharges in single cortical neurons are recorded it is usual to find that they respond to light falling in one or the other eye.
Their model contained excitatory and inhibitory connections among two layers of neurons representing stimulus features imaged in the separate eyes.
While it would have been theoretically optimal to also equate the luminance between eyes, this was not technically possible in this experiment - if the red and green targets were presented to separate eyes, any small changes in vergence would put the two targets out of phase and disrupt the minimum motion procedure used here.
When test and adapt flashes were delivered to the same eye, interactions were stronger than when flashes were delivered to separate eyes.
In both tasks, retinal interactions were inferred by comparing the perceptual matches obtained when adapt and test flashes were delivered to the same vs separate eyes.
One potential limitation of this approach is that for individual patients, areas of vision loss in each eye may not necessarily overlap and visual field data for separate eyes may not capture the person's binocular visual field.
