Understanding Organisms 2.0 / 5 based on 1 rating ? BiologyVariety of life and classificationGCSEOCR Created by: Emily HickmamCreated on: 01-01-13 14:34 What function does the cornea have? Cornea refracts light rays. 1 of 7 What does the pupil do? The pupil allows light rays to enter the eye. 2 of 7 What does the iris control? The coloured iris controls the amount of light entering the eye. 3 of 7 What do the suspensory ligaments do? They alter the shape of the lens in focusing. 4 of 7 What does the optic nerve do? The optic nerve carries nerve impulses to the brain. 5 of 7 What does the retina contain? It contains light receptors. Some are sensitive to different colours. 6 of 7 Why is binocular vision good? Binocular vision help to judge distance by comparing the images from each eye; the more different they are, the nearer the image? 7 of 7
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