A person with myopia has a lens-to-retina distance of 2.0 cm and a far-point of 0.95...

Question

Question

A person with myopia has a lens-to-retina distance of 2.0 cm and a far-point of 0.95 m.

What is the minimum optical power of this person's eye? (to 2 s.f and in D)

Answer 1

Answer #1

Here we have given that,

Condition - myopia (nearsightedness)

lens-to-retina distance = 2.0 cm

far-point = 0.95 m.

For the minimum optical power of this person's eye we can use,

Pf = 1/f = 1/v -1/u = 100/2 + 1/0.95 = 51.05263 D

Now for the normal operation of eye Pf' = 1/f'

= 1/0.02 = 50

So that minimum optical power of the person is given as,

Pg = Pf-Pf' = 1.05263 D

Answer 2

Similar Homework Help Questions

The lens-to-retina distance of a woman is 1.92 cm, and the relaxed power of her eye is 54.6 D. (a...

The lens-to-retina distance of a woman is 1.92 cm, and the relaxed power of her eye is 54.6 D. (a) What is her far point? How is the refracting power of a person's eye for distant vision related to their far point and lens-to-retina distance? m (b) What eyeglass power will allow her to see distant objects clearly, if her glasses are 1.80 cm from her eyes?
PLEASE ANSWER E & F 31.8: A person with refractive myopia can see objects as close...

PLEASE ANSWER E & F 31.8: A person with refractive myopia can see objects as close as 25 cm clearly, and objects as far as 3 m away. a) What is the maximum optical power of this person's eye? b) What is the minimum optical power of this person's eye? c) What is the range of accommodation of this person's eye? The person gets a set of contact lenses for their eyes to correct their far vision....
The lens-to-retina distance is 2.04 cm, and the relaxed power of the eye is 51.0 D....

The lens-to-retina distance is 2.04 cm, and the relaxed power of the eye is 51.0 D. What is the far point in m? What eyeglass power in D will help the person see distant objects clearly, if the glasses are 1.80 cm from the eyes?

An eye has a lens-to-retina distance of 1.95 cm. The power of the relaxed lens is...

An eye has a lens-to-retina distance of 1.95 cm. The power of the relaxed lens is +52.53 diopters. Calculate its far point distance in METERS. Tip: Be sure to do any algebra and units conversions as needed before submitting your answer.
A near-sighted person has a far point of 80 cm. A) What kind of corrective lens...

A near-sighted person has a far point of 80 cm. A) What kind of corrective lens the person will need if the lens is to be placed 1.5 cm from the eye? The answer is not 78.5, 80 or -1.27 B) What would be the power of the contact lens needed? Assume distance to contact lens from the eye to be zero.
What is the far point of a person whose eyes have a relaxed power of 51.7?...

What is the far point of a person whose eyes have a relaxed power of 51.7? Assume the lens-to-retina distance is 2.00cm. What is the far point of a person whose eyes have a relaxed power of 51.7 D? Assume the lens-to-retina distance is 2.00 cm. far point: m Question Credit: OpenStax College Physics

There are three types of conditions by which the eye can not focus properly; myopia, hyperopia and astigmatism. Here we will explore only myopia and hyperopia. In myopia (for various reasons) the imag...

There are three types of conditions by which the eye can not focus properly; myopia, hyperopia and astigmatism. Here we will explore only myopia and hyperopia. In myopia (for various reasons) the image within the eye focuses on a point in the vitreous humor and not in the retina. This causes the eye to be unable to correctly focus on distant objects. In hyperopia (for various reasons) the image focuses on a point farther away than the retina outside the...
A child's far point is 129 cm and her near point is 15.0 cm. In what...

A child's far point is 129 cm and her near point is 15.0 cm. In what follows, we assume that we can model the eye as a simple camera, with a single thin lens forming a real image upon the retina. We also assume that the child's eyes are identical, with each retina lying 1.80 cm from the eye's "thin lens." (a) What is the power, P, of the eye when focused upon the far point? (Enter your answer in...
What is the far point of a person whose eyes have a relaxed power of 53.7...

What is the far point of a person whose eyes have a relaxed power of 53.7 D? Assume the lens-to-retina distance is 2.00 cm. far point: m Question Credit: OpenStax College Physics

A child's far point is 127 cm and her near point is 12.5 cm In what...

A child's far point is 127 cm and her near point is 12.5 cm In what follows, we assume that we can model the eye as a simple camera, with a single thin lens forming a real image upon the retina. We also assume that the child's eyes are identical, with each retina lying 1.90 cm from the eye's "thin lens." (1) What is the power, P, of the eye when focused upon the far paint? (Enter your answer in...