Rachel has good distant vision but has a touch of presbyopia. Her near point is...

Walter Clyburn

Walter Clyburn

Answered

2022-01-03

Rachel has good distant vision but has a touch of presbyopia. Her near point is 0.60 m. When she wears +2.0 D reading glasses, what is her near point? Her far point?

Answer & Explanation

Bertha Jordan

Bertha Jordan

Expert

2022-01-04Added 37 answers

Given
Power =+2D
Initial near point =0.6m
a) power (P)=1f=+2D, V=0.6 m
Here, using the lens equation as following below,
1V1u=1f
10.61u=2
u=0.27 m
Her near point is 0.27 m
b) Now, her new near point V=
P=1f
2=1f
f=12m
f=0.5 m
Now, using the lens equation,
1V1u=1f
11u=10.5
u=0.5m
Raches far point is 0.5 m

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