Introduction to the eye

The thin membrane that lines the back of the eyelid and the outer surface of the eye is the...

• cornea

• conjunctiva

• lacrimal gland

• sclera

Which of the following is not a protective feature of the eye?

• choroid coat

• eyelashes

• tears

• conjunctiva

The white opaque portion of the eye is the...

• cornea

• choroid coat

• sclera

• retina

The pigmented contractile structure that controls the amount of light that enters the eye is the...

• iris

• pupil

• lens

• cornea

Which of the following is not a refractive structure that light passes through?

• cornea

• lens

• vitreous humor

• iris

The clear jelly-like substance that fills the back of the eye is the...

• aqueous humor

• vitreous humor

• lens

• tears

The cells that provide peripheral vision and allow us to see in dim light are called...

• rods

• cones

• macula

• optic disk

After the retina converts light into electrical impulses, the _____________ will carry the message to the brain.

• macula

• cone cells

• optic disk

• optic nerve

What is responsible for producing tears?

• conjunctiva

• lacrimal duct

• eye lid

• lacrimal gland

The tunic of the eye that provides a blood supply is the...

• choroid

• sclera

• cornea

• retina