The eye

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Question 22

An optometrist screened 320 school children for astigmatism using the chart shown below.

An astigmatism testing chart showing a circle of bold, radiating black lines spaced at regular angular intervals, used to detect uneven focus in the eye.

15% of these children were diagnosed with astigmatism.

The rest of the children had normal vision.

Calculate the number of children who had normal vision.

[3]

The eye

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Question 22

An optometrist screened 320 school children for astigmatism using the chart shown below.

An astigmatism testing chart showing a circle of bold, radiating black lines spaced at regular angular intervals, used to detect uneven focus in the eye.

15% of these children were diagnosed with astigmatism.

The rest of the children had normal vision.

Calculate the number of children who had normal vision.

[3]

The eye

Question 22

The eye Questions

The eye

Question 22

The eye Questions