Practice Defects Of Vision And Their Correction (10.1.2) - The Human Eye and the Colourful World

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6 sample questions

Question 1.
What type of lens is used to correct myopia?
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Think about focusing light for near vision.
Question 2.
What is presbyopia?
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Consider your grandparents and their reading glasses.
3Question 3.
What is myopia?
- Distant vision is clear
- Nearby vision is clear
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Think about whether the person sees better close up or far away.
4Question 4.
True or False: Hypermetropia is also known as near-sightedness.
- True
- False
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Consider what is clear for someone with hypermetropia.
Question 5.
A person has a myopic defect with a far point of 75 cm. Calculate the power of the corrective lens required.
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Think about the negative nature of concave lenses.
Question 6.
If a 60-year-old experiences difficulty reading and needs lenses to correct her vision, but her far sight is perfect, what type of lens should she consider, and why?
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Consider how her vision relates to age and distance.

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