Exam 4: Vision

Front

What part of the eye is affected by presbyopia?

Back

Lens

Front

Through which structure do tears first drain from the eye?

Back

Lacrimal canaliculi

Front

What is the term for the opening created when the eyelid is up?

Back

Palpebral fissure

Front

Which type of photoreceptor cell is most numerous in the human eye?

Back

Rod cells

Front

What is the primary function of the iris in the eye?

Back

Changes the size of the pupil

Front

What is the function of the cornea in the eye?

Back

The cornea helps to focus light onto the retina.

Front

What is the role of the sclera?

Back

The sclera provides structure and protection to the eye.

Front

What are cone cells responsible for?

Back

Cone cells are responsible for color vision and function best in bright light.

Front

What is the vitreous humor?

Back

The vitreous humor is a gel-like substance that fills the space between the lens and the retina.

Front

What is the function of the retina?

Back

The retina converts light into neural signals and sends them to the brain.