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n artificial lens is implanted in a person\'s eye to replace a diseased lens. Th

ID: 1974750 • Letter: N

Question

n artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.70 cm. In the absence of the lens, an image of a distant object (formed by refraction at the cornea) falls 2.59 cm behind the retina. The lens is designed to put the image of the distant object on the retina. What is the power of the implanted lens? (Hint: Consider the image formed by the cornea to be a virtual object for the implant lens.)



The response you submitted has the wrong sign. diopters

Explanation / Answer

From lens equation

Focal length f, the relation between object distance (p) and image distance (q) is given by