Edexcel IGCSE Biology 2.91 Eye Structure and Function Questions

The eye acts as a receptor: light is focused onto the retina, where light-sensitive cells detect it. Explore how eye structure shapes vision.

Exam points

Identify and name eye structures, including the cornea, lens, iris, pupil and retina, and relate them to light entry or detection.
Identify vision or sight as the sense that uses receptor cells in the retina.
Explain how damage to the fovea in age-related macular degeneration affects central vision, detail or colour.
Explain how two forward-facing eyes help a predator judge distance and locate prey using overlapping fields of view.

[Maximum number: 1]

The diagram shows the structure of a human eye.

Which of these is the structure labelled X ?

conjunctiva

cornea

lens

retina

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