My friend Charlie has myopic eyes. His far point is 60 cm in front of his...

Question

Question

My friend Charlie has myopic eyes. His far point is 60 cm in front of his eyes.
1. What should be the power of his contact lenses?
2. If he decides to go for eyeglasses instead, what would be the power? (Assume the eyeglass lens is 2 cm in front of the eye.

Answer 1

Answer #1

Answer 2

Similar Homework Help Questions

A myopic man has a far point of 190 cm. Randomized Variables do = 190 cm...

A myopic man has a far point of 190 cm. Randomized Variables do = 190 cm What power contact lens in D (when on the eye) will correct his distant vision?
A very myopic man has a far point of 16.9 cm. What power contact lens (in...

A very myopic man has a far point of 16.9 cm. What power contact lens (in D, when on the eye) will correct his distant vision?
A physicist can see distant things clearly when wearing -2.00-diopter eyeglasses. Each lens rests 1.55 cm...

A physicist can see distant things clearly when wearing -2.00-diopter eyeglasses. Each lens rests 1.55 cm in front of the eye. (a) What focal length (in cm) describes the lenses? (b) Determine the far point (in cm) for this physicist's eyes. (c) is the physicist nearsighted or farsighted? nearsighted farsighted (d) The physicist decides to replace eyeglasses with contact lenses, one of which rests directly on each eye. What would the contact lens power be (in diopters) in order to...

Ex2: A very myopic person has a near point of 8 cm, and a far point...

Ex2: A very myopic person has a near point of 8 cm, and a far point of 20 cm. What power lens does he need to see clearly at a distance? What is his new near point with this vision correction?
An optometrist tests a person and finds that without glasses, he needs to have his eyes...

An optometrist tests a person and finds that without glasses, he needs to have his eyes 15.0 cm from a book to read comfortably and can focus clearly only on distant objects up to 2.75 m away, but no farther. A typical normal eye should be able to focus on objects that are between 25.0 cm (the near point) and infinity (the far point) from the eye. (a) What type of correcting lenses does the person need: single focal length...
(1.) Nearsightedness (a.) A nearsighted person has a far point that is 323 cm from her...

(1.) Nearsightedness (a.) A nearsighted person has a far point that is 323 cm from her eye. Her lens in a pair of glasses is 2 cm in front of her eye. What focal length is required to cast the image of a far-away object at her far point? (b.) If these glasses are used to view an object 525 cm from her eye, where do her glasses cast the image? In both cases, quote your distance as measured from...

A person’s vision is myopic; without correction, the far point of her eye is a modest 40 cm. This...

A person’s vision is myopic; without correction, the far point of her eye is a modest 40 cm. This does come with a benefit of having a near point of 8.0 cm. If she wears a lens that correct her distance vision, what power lens is required? With this lens in place, what is her near point?
A nearsighted man uses his ideally prescribed eyes of -1.85 diopters. He would like a prescript...

A nearsighted man uses his ideally prescribed eyes of -1.85 diopters. He would like a prescript an uses his ideally prescribed eyeglasses that have a refractive power aces He would like a prescription for contact lenses. What is the corect contact lens prescription if he normally wears his eyeglasses 3.00 cm from his eyes? a) 1.75 diopters b) -1.96 diopters c) -1.75 diopters d) 1.96 diopters e) -2.25 diopters
Bailey has a eyeglasses with a prescription of -4.00D. While wearing these glasses so that the lenses sit 2.00 cm i...

Bailey has a eyeglasses with a prescription of -4.00D. While wearing these glasses so that the lenses sit 2.00 cm in front of the eyes, Bailey can see distant object clearly with fully relaxed eyes. Part a What is the far point for Bailey's uncorrected vision? Please enter a numerical answer below Accepted formats are numbers or 'e based scientific notation e.g.0.23,-2 1e6, 5.23e-8 Enter answer here cm 0 of 10 attempts used CHECK ANSWER Part b If Bailey wants...

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...