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Which would be a correct lens prescription for a person with hypermetropia and astigmatism? Tick (✓) one box - AQA - A-Level Physics - Question 5 - 2021 - Paper 5
Question 5
Which would be a correct lens prescription for a person with hypermetropia and astigmatism? Tick (✓) one box. –2.00 +0.50 75 +2.00 –0.50 75 –2.00 +0.50 255 +2.0... show full transcript
Worked Solution & Example Answer:Which would be a correct lens prescription for a person with hypermetropia and astigmatism? Tick (✓) one box - AQA - A-Level Physics - Question 5 - 2021 - Paper 5
Step 1
Identify the correct lens prescription
Answer
For hypermetropia (farsightedness) and astigmatism, the lens prescription must include a positive spherical value combined with a cylindrical value.
In this case, the option +2.00 –0.50 75 should be selected as it indicates a positive lens for hypermetropia, with a cylindrical correction for astigmatism.