CPO Basic Science

Question 1

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

Accepted Answer

Cornea

Answer

Retina

Answer

Iris

Answer

Lens

Question 2

What is the primary function of the retina?

Accepted Answer

Convert light into electrical signals

Answer

Regulate the amount of light entering the eye

Answer

Maintain the shape of the eyeball

Answer

Provide nutrients to the eye

Question 3

Which photoreceptor is primarily responsible for night vision?

Accepted Answer

Rods

Answer

Cones

Answer

Ganglion cells

Answer

Bipolar cells

Question 4

What is the aqueous humor, and where is it located?

Accepted Answer

A fluid in the anterior and posterior chambers of the eye

Answer

A gel-like substance in the posterior segment of the eye

Answer

The clear layer covering the sclera

Answer

A muscle controlling pupil size

Question 5

Which structure controls the size of the pupil?

Accepted Answer

Iris

Answer

Ciliary body

Answer

Cornea

Answer

Retina