The Eye and Vision Quiz

What part of the eye does light enter through first?

• Retina

• Cornea

• Lens

• Pupil

The lens and the ______ focus the light onto the retina.

• Cornea

• Pupil

• Optic nerve

• Electrical signal

What type of signal is sent down the optic nerve to your brain?

• Chemical

• Electrical

• Optical

• Mechanical

The light forms a ______ image.

• Virtual

• Real

• Imaginary

• Projected

Which part of the eye must light be focussed on?

• Retina

• Cornea

• Lens

• Optic nerve

If you are short-sighted, you correct this with...

• Concave lens

• Convex lens

• Flat lens

• Cylindrical lens

If you are long-sighted, you correct this with...

• Concave lens

• Convex lens

• Flat lens

• Cylindrical lens

What is the function of the retina?

• To reflect light

• To focus light

• To detect light

• To absorb light

The optic nerve is responsible for...

• Sending electrical signals to the brain

• Focusing light

• Absorbing light

• Reflecting light

The cornea helps in...

• Reflecting light

• Focusing light

• Absorbing light

• Refracting light