Eye Physiology Quiz
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If an object moves closer than the far point of vision, which is NOT one of the three reflexes that must occur to bring the image to proper focus?
A. Accommodation of the lens
B. Relaxing ciliary muscles
C. convergence of the eyes
D. constriction of the pupil
It’s a change to the lens that causes it to stiffen and also discolor the lens of the eye. It causes blurring of up close vision that impedes ability to read printed material or text on a screen. This is often related to aging.
A. Myopia
B. Presbyopia
C. Hyperopia
D. Astigmatism
Which of the following is the correct order of the structures through which light passes after entering the eye?
A. Lens, pupil, cornea, retina
B. Pupil, cornea, lens, retina
C. Cornea, retina, pupil, lens
D. Cornea, pupil, lens, retina
Write the correct pathway of for the sensory message to be sent to the brain?
A. retinal ganglion, bipolar cells, cones or rods, optic nerve
B. cones or rods, bipolar cells, ganglion cells, optic nerve
C. bipolar cells, cones or rods, retinal ganglion, optic nerve
D. bipolar cells, ganglion cells, cones or rods, optic nerve
When you are looking at something up close, this reflex occurs to reduce the amount of light entering eye.
A. blind spot
B. Accommodation
C. pupil constriction
D. somatic reflex arc
When the eyeball is too long causing Nearsightedness
A. Myopia
B. Hyperopia
C. Asigmatism
D. Presbyopia
In order to see clearly, light rays must be bent to hit the ______ of the retina.
A. blind spot
B. optic disk
C. fovea centralis
D. focal point
Eye strain is caused by
A. extended time for ciliary muscles to stay contracted
B. lens staying flat for too long
C. looking at something far away
D. blurry vision
Type of photoreceptor that functions in low light and creates shades of gray
A. retina
B. rod
C. cone
D. choroid
Contains the visual and auditory reflex centers.
A. Midbrain
B. Pons
C. Medulla Oblongata
D. Reticular formation
The fovea contains which types of photoreceptors?
A. Rods
B. Cones
Sensory neurons in the retina send ____________ which are routed to the visual cortex in the occipital lobe of the brain.
A. action potentials
B. blind spots
C. light waves
D. accomodations
When light hits the retina, the _________ are stimulated.
A. sclera
B. optic disk
C. photoreceptors
D. choroid coat
When the eyeball is too short, causing Farsightedness
A. Hyperopia
B. Myopia
C. Glaucoma
D. Astigmatism
How many types of cones do you have?
A. 2
B. 3
C. 4
D. 5
