CAIE IGCSE Biology 14.2.3 Functions of Eye Structures

Practise matching the cornea, iris, lens, retina and optic nerve to their roles in vision.

Exam points

link the cornea to refraction and the lens to focusing light on the retina
link the iris to control of light entering through the pupil
link retinal receptors to detection and the optic nerve to impulses sent to the brain

[Maximum number: 3]

The eye is a sense organ that is part of the nervous system.

Fig. 5.1 is a diagram of a section through the human eye.

Fig. 5.1

Table 5.1 shows some of the parts labelled in Fig. 5.1, their names and their functions.

Complete Table 5.1.

Table 5.1

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