The eye

The cornea

• Is where light enters the eye. It is covered by the conjunctiva

• Is where light enters the eye. It is covered by the iris

• Is where light leaves the eye. It is covered by the conjunctiva

• Is where light leaves the eye. It is covered by the conjunctiva

This part of the eye has a small opening where light passes through and is black

• Conjunctiva

• Iris

• Pupil

• Cornea

The ____________ dilates in dim/dark light and contracts in bright light

• Retina

• Cornea

• Iris

• Pupil

The lens is flexible and can be made fatter or thinner by the muscles around it

• True

• False

• Only in adults once the eye is fully developed

• Only in people who aren't colour blind

This part of the eye contains many tiny receptor cells that detect light. They travel via the optic nerve and send electrical impulses to the brain

• Lens

• Retina

• Cornea

• Iris

Number 6 in the diagram is the ______________ and number 7 in the diagram is the _______________

• Optic nerve, retina

• Optic nerve, blind spot

• Blind spot, retina

• Blind spot, optic nerve

The fovea is

• A coloured ring of muscle that controls the amount of light that enters the eye

• The area at the back of the eye that sends electrical impulses to the brain

• The area in the centre of the retina where we see colour and fine detail

• A shield that protects against factors that can cause damage eg. dirt

Mary is having difficulty reading a sign in the distance as it is blurred. What can you conclude about her?

• She's short sighted

• She's long sighted

• She's both

• She's neither

If you are short sighted, light rays from distant objects bend drastically so an image forms _________ the retina

• To the side of

• Behind

• In front of

• On

If Sally wears glasses with concave lenses she is most likely

• Short sighted

• Long sighted

• Colour blind

• To have a bionic eye