Quiz on Physiology of Vision

What is the primary function of the ciliary muscles in the eye?

• To control eye movement

• To absorb light rays

• To protect the retina

• To change the curvature of the lens

What condition is characterized by the loss of accommodation with age?

• Presbyopia

• Myopia

• Hyperopia

• Emmetropia

Which part of the eye is responsible for focusing light onto the retina?

• Cornea

• Iris

• Pupil

• Sclera

What type of lens is used to correct nearsightedness?

• Cylindrical lens

• Convex lens

• Concave lens

• Bifocal lens

Which photoreceptors are more sensitive to dim light?

• Ganglion cells

• Bipolar cells

• Rods

• Cones

What is the blind spot in the eye?

• Area for color perception

• Area with no photoreceptors

• Area with high acuity

• Area for night vision

What is the function of the lateral geniculate body?

• Relay visual signals

• Production of photoreceptors

• Control of eye movement

• Absorption of light

Which structure connects the optic nerve to the primary visual cortex?

• Retinal vessels

• Optic chiasma

• Optic tract

• Geniculocalcarine fibers

What is the primary function of cones in the retina?

• Depth perception

• Peripheral vision

• Color vision

• Night vision

What happens to the near point of vision as a person ages?

• It remains the same

• It recedes

• It improves

• It becomes more acute