The near point of a patient's eye is 58.2 cm.

Question

(a) What should be the refractive power ℛ of a corrective lens prescribed to enable the patient to clearly see an object at 22.0 cm?
ℛ = dpt

(b) When using the new corrective glasses, the patient can see an object clearly at 23.8 cm but not at 22.0 cm. By how many diopters did the lens grinder miss the prescription? (dpt)

Answer 1

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