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GCSE Biology · key term
The transparent, curved front surface of the eye that refracts incoming light.
Used by AQA, Edexcel and OCR
Specification 4.5.2.3 · Paper 2
The transparent front part of the eye that bends incoming light.
Revise: Structure and Function of the EyeFollow the route of light from the front of the eye. It first passes through the transparent cornea, which bends, or refracts, the light. Behind the cornea is the coloured iris.
Specification 2.15B · Paper 1
The transparent curved layer at the front of the eye that refracts incoming light.
Revise: Structure and Function of the EyeThe cornea and lens focus the light, the iris controls how much enters, and rod and cone cells in the retina detect it.
Specification B3.1d · Paper 1 (Foundation), Paper 3 (Higher)
The transparent, curved front surface of the eye that refracts light as it enters.
Revise: The eyeThe cornea is the transparent, curved covering at the front of the eye. Its curved surface refracts—bends—incoming light and begins directing it towards the retina. Its shape is fixed, so it provides a largely fixed amount of refraction.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: The EyeLight from an object enters the eye through its transparent front surface, the cornea. The cornea bends, or refracts, the light. It then passes through the pupil, an opening in the coloured iris, and through the transparent lens.
In an explanation of focusing, name both refracting structures: the cornea bends incoming light and the lens changes shape to produce a sharp image on the retina.
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