High-acuity vision is mediated by
A) the photopic system.
B) the scotopic system.
C) the optic disks.
D) rhodopsin.
E) both C and D

Question

Quizplus · Accepted Answer

High-acuity vision refers to visual perception of fine details and is primarily mediated by the photopic system, which operates in bright light conditions and is characterized by the presence of cone photoreceptor cells that provide high spatial resolution and color vision. The scotopic system, which operates in dim light conditions, is responsible for low-acuity vision and is characterized by rod photoreceptor cells that have lower spatial resolution and provide only black and white vision. The optic disks are sites where the axons of retinal ganglion cells converge to form the optic nerve, and do not directly mediate vision. Rhodopsin is a light-sensitive pigment found in rod photoreceptor cells and is involved in the transduction of visual signals, but is not specific to high-acuity vision. Therefore, choices C and D are incorrect.

High-Acuity Vision Is Mediated by