A farsighted boy has a near point at 0.5m and requires contact lenses to correct his...
A farsighted boy has a near point at 0.5m and requires contact lenses to correct his vision to the normal near point. What is the correct choice of lens power for the contact lenses?
The answer is +6.0 diopters but I keep getting 2 so I'm not sure what I am doing wrong.
Homework Answers
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A farsighted boy has a near point at 0.5m and requires contact
lenses to correct his...
People commonly use contact lenses to correct their vision. A patient has a near point of...
People commonly use contact lenses to correct their vision. A patient has a near point of 150 cm and, to correct this, wears contact lenses with a focal length of 50 cm Part A What is the refractive power of her contact lenses? Part B How close can she hold a newspaper and still read it while wearing her contact lenses? Part C The indices of refraction for her contact lens, cornea, and the fluid behind her cornea are 1.6,...
A farsighted person has a near point of 75 cm rather the normal 25 cm. What...
A farsighted person has a near point of 75 cm rather the normal 25 cm. What strength lens, in diopters, should be prescribed to correct this vision problem? Object , o = 25cm, image, i= -75cm(negative, in front of lens) Martin is severe myopia, with a far point of 15cm. he wants to get a glass that he ‘ll wear while using his computer, whose screen is 75cm away. What refractive power will these glasses required? Object, o=75 cm, image,...
A farsighted man uses eyeglasses with a refractive power of 2.10 diopters. Wearing the glasses 0.030...
A farsighted man uses eyeglasses with a refractive power of 2.10 diopters. Wearing the glasses 0.030 m from his eyes, he is able to read books held no closer than 0.270 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters? I keep getting 1.637 but now I believe the answer is 1.75768. Is 1.75768 correct?
What is the power of a contact lens worn by a farsighted person whose near point...
What is the power of a contact lens worn by a farsighted person whose near point is 1.00m? Assume normal near point as 0.250m. Answer: D
A nearsighted person has a far point of 21.5cm and is prescribed contact lenses to correct her vision
A nearsighted person has a far point of 21.5cm and is prescribed contact lenses to correct her vision. What lens strength (a.k.a., lens power), in Diopters, should be prescribed? Give your answer using the usual convention of positive values for converging lenses and negative values for diverging lenses. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 146, 5.23e-8
A farsighted man uses contact lenses with a refractive power of 2.20 diopters. Wearing the contacts,...
A farsighted man uses contact lenses with a refractive power of 2.20 diopters. Wearing the contacts, he is able to read books held no closer than 0.285 m from his eyes. He would like a prescription for eyeglasses to serve the same purpose. What is the correct prescription for the eyeglasses if the distance from the eyeglasses to his eyes is 0.030 m? in dipoters ??? not 1.67 A diverging lens (f1 = −13.5 cm) is located 23.0 cm to...
A farsighted man uses contact lenses with a refractive power of 2.20 diopters. Wearing the contacts,...
A farsighted man uses contact lenses with a refractive power of 2.20 diopters. Wearing the contacts, he is able to read books held no closer than 0.285 m from his eyes. He would like a prescription for eyeglasses to serve the same purpose. What is the correct prescription for the eyeglasses if the distance from the eyeglasses to his eyes is 0.030 m? in diopters
2) Waifer X’s near point is 0.700m. a) Is Waifer X farsighted or nearsighted? e) What...
2) Waifer X’s near point is 0.700m. a) Is Waifer X farsighted or nearsighted? e) What prescription contact lenses does she need (in diopters) to be able to see things that are 0.25m away? c) Does Waifer X need converging or diverging contact lenses in order to have normal vision? b) Is her relaxed f too long or too short? d) What distance from Waifer X do these contact lenses have to put images of objects that are 0.25m away...
7. A farsighted man uses contact lenses with a refractive power of 1.95 diopters. Wearing the...
7. A farsighted man uses contact lenses with a refractive power of 1.95 diopters. Wearing the contacts, he is able to read books held no closer than 0.250 m from his eyes. He would like a prescription for eyeglasses to serve the same purpose. What is the correct prescription for the eyeglasses if the distance from the eyeglasses to his eyes is 0.020 m? ANSWER IN DIOPTERS
A farsighted man uses eyeglasses with a refractive power of 1.80 diopters. Wearing the glasses 0.025...
A farsighted man uses eyeglasses with a refractive power of 1.80 diopters. Wearing the glasses 0.025 m from his eyes, he is able to read books held no closer than 0.305 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters? 1.51 and 1.46 was wrong
What is the power of a contact lens worn by a farsighted person whose near point is 1.00m? Assume normal near point as 0.250m. Answer: D
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