A person has a far point of 21 cm this means that the, Ask an Expert

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A person has a far point of 21 cm. This means that the person’s corrective lenses should produce an image 21 cm in front of the eye for an object that is very far away.

a. What power glasses would correct this person’s vision, assuming the glasses are worn 1 cm in front of the eye? Include a sketch.

b. What power contact lenses would correct this person’s vision, assuming the contact lenses are worn on the eye? Include a sketch.

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