a myopic person has a contact lens prescription for -1.5 D Class Management I He

Question

a myopic person has a contact lens prescription for -1.5 D Class Management I Help hapter 26 Begin Date 4130/2017 11:00:00 AM-Due Date: 5/7/2017 11:59:00 PM End Date: 5/7/2017 11:59:00 PM (8%) Problem 4: A myopic person has a contact lens prescription for-15 D. Randomized Variables P 1.5 D What is her far point, FP, in centimeters? FP 39.88 sino coso tano 7 8 9 HOME N 4 5 6 cotano asino acoso atan0 acotano sinh0 cosho tanho cotanho ODegrees ORadians BACKSPACE DEL CLEAR I give up! Hints: 0 deduction per hint. Hints remaining: 2 Feedback deduction per feedback. All content 02017 Expert TA LIc Grade Summary Deductions Potential 100% Attempts remaining: (09 per attempt)

Explanation / Answer

The normal far point of the human eye is infinity.

The lens will form the image of the object at infinity at the far point of the myopic person.

Using lens formula,

1/do + 1/di = P

=> 1/ + 1/di = -1.5

=> di = -(1/1.5) m = -(100/1.5) cm = -66.7 cm

So, the far point of this eye is 66.7 cm.

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