Depth Cues Basics
Definition of binocular depth cues
depth cues that you need strong input from both eyes to get.
The definition of depth perception
What is the ability to perceive spatial relationships in three dimensions
Also referred to as a "lazy eye"
What is Amblyopia
Vergence refers to _______
What is where your eyes are pointed
depth cues you can get just from one eye
What are monocular depth cues
the focus of your eyes on distant or near objects
What is accommodation
a disorder in which both eyes do not line up in the same direction. They do not look at the same object at the same time.
What is Strabismus
Muscles that rotate the eyeballs for them to converge at a depth
What are oculomotor muscles
Any means used to inform the visual system about the depth of a target or its distance from the observer
What are depth cues
the slightly different view of the world that each of our eyes receives
what is binocular disparity
Amblyopia is the most common cause of vision loss in _________
What is kids
Stereo vision depends on ______ as a cue.
What is disparity
The _______ an object is, the greater the difference in the image on the two retinas is.
What is closer.
muscles that change the focal length by compressing the lens of the eye
What are ciliary muscles
Normally, the brain uses nerve signals from both eyes to see. But if an eye condition makes vision in one eye worse, the brain may try to ________.
What is “turn off” signals from the weaker eye and rely solely on signals from the stronger eye.
Demonstrates how retinal size is determined by a combination of object size and viewing distance
What is Emmert's law
2 examples of monocular depth cues
What are relative height, relative size, occlusion, shadows, texture gradient, atmospheric perspective, etc.
In primary visual cortex, disparity neurons are tuned to the _____ _______ of images of the same object on each retina.
what is relative location
A condition in which one eye is far sighted and the other is near sighted
What is Anisometropia
an imaginary circle drawn through the point where the eyes are converged on and back to the eyes, which traces out the location of all points in the 3D visual field that will land on the retinae with zero disparity (no difference).
what is the horopter