Eye Anatomy and Vision Test

Choose the correct statement about the eye:

• A. Bipolar and ganglion cells occur in the retina except at the fovea.

• B. Rod and cone cells occur in the retina except at the fovea.

• C. Bipolar and ganglion cells occur in the choroid except at the optic disc

• D. Rod and cone cells occur in the choroid except at the optic disc.

Which part of the retina has the greatest sensitivity to light?

• A. the optic disc

• B. macula lutea

• C. the choroid

• D. fovea centralis

The deterioration of sight with age is known by which term?

• A. protanopia

• B. presbyopia

• C. hyperopia

• D. scotopia

What is the place where the blood vessels and nerve fibers come together and leave the posterior chamber of the eye called?

• A. macula lutea

• B. optic disc

• C. fovea centralis

• D. choroid

Accommodation refers to the eye's ability to focus light from objects whatever their distance from the eye. How is this achieved?

• A. by altering the distance between the cornea and the eye's lens

• B. by altering the distance between the lens and the retina

• C. by altering the shape of the eye's lens

• D. by altering the shape of the cornea

What does the ciliary muscle do when accommodation (focussing) in the eye occurs?

• A. It contracts and the tension on the ciliary fibers increases making the eye lens less convex.

• B. It relaxes and the tension on the ciliary fibers decreases allowing the eye lens to become more convex.

• C. It contracts and the pull of the ciliary fibers decreases allowing the lens to become more convex.

• D. It relaxes and the pull of the ciliary fibers increases to make the lens less convex.

Which cells of the retina are responsible for detecting light in scotopic (i.e. low light) conditions?

• A. bipolar cells

• B. rod cells

• C. ganglion cells

• D. cone cells

Accommodation refers to our ability to bring objects at any distance into sharp visual focus by altering which of the following?

• A. the distance between our eye and the object to be viewed

• B. the curvature of our cornea

• C. the curvature of the eye's lens

• D. the distance between the lens and retina

What is the purpose of the optic chiasma?

• A. to allow images from each eye to cross over to the other side of the brain prior to crossing back at the decussation of pyramids.

• B. to allow fibers from the medial aspect of one eye to join fibers from the lateral aspect of the other eye to form an optic tract.

• C. to allow the fibers from the lateral aspect of each eye to come together as an optic tract.

• D. to allow light entering the left eye to be interpreted by the right hand side of the occipital lobe (and vice versa).

What is presbyopia (old-age vision) due to?

• A. the loss of elasticity of the lens of the eye

• B. the change in the curvature of the cornea

• C. the gradual loss of cone cells from the retina

• D. the deviation from a spherical eye-ball shape with aging.