Statistics for GCSE Biology - Parts of the Eye

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Hint	Answer	% Correct
A hole located in the centre of the iris allowing light to strike the retina.	Pupil	91%
An area at the back of the eye containing clusters of light-sensitive cells.	Retina	81%
A clear disc controlled by the ciliary muscles and suspensory ligaments that focuses light rays to produce a clear image of the retina.	Lens	79%
Sends impulses to the brain collected by sensory neurones when light-sensitive cells in the retina are stimulated.	Optic Nerve	79%
Made up of muscles which contract/relax to control the size of the pupil, as well as how much light enters the eye.	Iris	75%
A transparent area of the sclera at the front of the eyeball, letting light in and playing an important role in focussing light rays onto the retina.	Cornea	74%
Attached to suspensory ligaments and control the position of the lens so it can focus the light by contracting/relaxing.	Ciliary Muscle	63%
The white, outer layer of the eye; tough and strong so little damage can be done to the eyeball.	Sclera	63%
Sit either side of the lens and hold it in position.	Suspensory Ligaments	59%
The point where the optic nerve leaves the eye; no retina is located here, therefore there are no light-sensitive cells.	Blind Spot	40%