95. Medical An optometrist tests a person and finds that without glasses, he nee

Question

95. Medical An optometrist tests a person and finds that without glasses, he needs to have his eyes 15.0 cm from a book to read comfortably and can focus clearly only on distant objects up to 2.75 m away, but no farther. A typical normal eye should be able to focus on objects that are between 25.0 cm (the near point) and infinity (the far point) from the eye. (a) What type of correcting lenses does the person need: single focal length or bifocals? Why? (b) What should the optometrist specify as the focal length of the correcting contact lens or lenses? (c) What is the power (in diopters) of the correcting lens or lenses? SSM

Explanation / Answer

a)

He needs a bifocals as he needs to correct his vision for both near sight and far sight

b)

for this part some data needs to be given : for example the image distance or specifically the

c)

same for this part

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