The eye and vision correction physics question?

Question

what power contact lens is needed to correct the vision of a person who has a far point of 1.00 m? If this person has a normal 8.00% ability to accommodate (increase) the power of her eyes, what is the closest object she will be able to see clearly with contacts on?

Answer 1

Accommodation is measured in diopters, not percent. I assume you mean 8 diopters of accommodation. Without corrective lenses, the person can focus from a far point of 1 m to a near point of 1/9th m. With corrective lenses, he could focus from a far point of infinity to a near point of 1/8th m.