# Life Sciences Paper 1, November 2024, question 2.3.2

> Use information in the passage to explain how a corneal scar can lead to... Marked mark by mark. Q2.3.2, Life Sciences Paper 1 November 2024, 5 marks.

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Last updated: 2026-11-12

Subject: Life Sciences. Source: Based on Nov 2024 · Paper 1 · Q2.3.2. Marks: 5. Not yet checked by a teacher.

## Question 2.3.2 (5 marks)

CORNEAL SCARRING AND SIGHT

The cornea is the clear, dome-shaped front layer of the eye. It is made of orderly layers of collagen fibres that are evenly spaced, which lets light pass straight through. After a deep injury or infection, the collagen fibres in the damaged area are replaced by tough, disorganised scar tissue. The scar tissue is cloudy and white instead of clear. Scars are most common in people who work with sharp tools or who wear contact lenses without cleaning them properly.

Use information in the passage to explain how a corneal scar can lead to loss of vision.

## Practise it

[Answer this question](https://sharpkop.co.za/life-sciences/2024-nov-p1/q2-3-2/) and see it marked mark by mark, with the reason for every lost mark.

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