Not entirely, or even necessarily. The attached article might help.
I tend to favor the Gibsonian view myself, wherein 3D perception is determined by the brain reacting to gradients within the visual scene. Clearly, one eyed folks can walk, drive cars, and fly airplanes, — all of which require spatial distance perception. No stereopsis needed.
Ed
Hi, Ed (and others),
I hope you realize that you are one of a handful of people on any group of bino forums who could cause me to doubt myself. Even so, while I know you are CORRECT, I believe the substance of the position is INCONSEQUENTIAL to everyday observing as:
— The vast majority will defer to my original assessment of the matter that the 3-D
effect is the result of seeing an image from TWO vantage points (at relatively shallow distances), simultaneously as has been found accurate for more than 120 years.
— Some people can take advantage of this
CONDITION, although I would argue it is not an
EFFECT but that a majority would render the condition tenuous at best.
My oldest was born with severe strabismus. Because of this, I had numerous conversations with optometrists, ophthalmologists, neurosurgeons, and finally ophthalmic surgeons.
At the end of his first year of life
(attached), I had to trust his vision to a poor untested surgeon named Zane Pollard of Atlanta’s Northside Hospital. We took a big risk with our son. That poor surgeon was so young,
he only had 19 degrees and certificates adorning his office ... yes, I counted. Billy—now, Will—was corrected to 7 degrees, with prism in the glasses doing the rest. That fixed him up pretty good, at least until he gets tired. When he gets tired, all bets are off.
Thus, I am familiar with the condition, though not enough to be easily conversant. While pursuing further, Dr. Pollard recommended I talk to a local neurosurgeon, whose name I have long forgotten, who explained the concept to which you have referred. Please rest assured I will go over the document you have provided me; many thanks.
Sadly, consider what I have experienced during my 20 years of visiting bino forums, I must rely on my knowledge that so many things discussed on them either don’t exist in the real world or if they do, realities of the condition are mislabeled.
Please note the
attached image. The customer owning this binocular said she didn’t see a problem!
“Everything looks fine to me.”
Sometimes you just have to stop arguing with people and let them be
WRONG!