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3 marksCoordination and Control

CSEC Human and Social Biology · January 2013 · Paper 2 · Question 4(c)(iv)

Uncle Khan's eye conditions: an irregularly curved cornea from childhood, and a diagnosis of cataract rather than glaucoma.

Explain to Uncle Khan what a cataract is and how it can be treated.

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Other parts of this question

  1. 4(a)Name TWO sense organs and the stimuli they detect.[4 marks]
  2. 4(b)(i)Annotate Figure 6 to show the activities that occur when the eye is focusing on a near object.[3 marks]
  3. 4(b)(ii)State the name of the process by which the eye focuses on near and far objects.[1 mark]
  4. 4(c)(i)Name the eye defect that is caused by an irregularly curved cornea.[1 mark]
  5. 4(c)(ii)Explain what causes glaucoma.[2 marks]
  6. 4(c)(iii)What effect does glaucoma have on eye vision?[1 mark]

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