CAIE IGCSE Biology 14.2.3 Function of Each Part of the Eye Questions

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

Exam points

link the cornea and lens to refraction of incoming light
link the iris to control of light entering through the pupil
link retinal receptors to light 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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