Question

chapter 15 multiple choice question 8
1 part | -- of 1 point

2 tries left

overlap in the visual fields of our eyes ______.

○ allows us to subconsciously estimate the distance of objects based on the different angles the image strikes our two retinas
○ is essentially a waste of brain processing for what is essentially the same image
○ gives us higher visual acuity for small detail by doubling the number of photoreceptors that are being stimulated
○ leaves a blind spot anterior to the nose and in the lateral fields of vision

Explanation:

• The overlap in visual fields (binocular vision) helps with depth perception. The brain uses the slight difference in the angle of the image on each retina (retinal disparity) to estimate object distance.
• The second option is wrong because overlapping visual fields are not a waste—they aid depth perception.
• The third option is incorrect as visual acuity for detail is more related to the fovea (concentration of photoreceptors) rather than doubling photoreceptors via overlapping fields.
• The fourth option is wrong; the blind spot is due to the optic nerve leaving the eye, not related to visual field overlap.

Answer:

A. allows us to subconsciously estimate the distance of objects based on the different angles the image strikes our two retinas