(a) What power lens would you prescribe for a patient with a far point of 38.6 cm?
(b) Repeat, assuming an eye-corrective lens distance of 2.00 cm.
(a) What power lens would you prescribe for a patient with a far point of 38.6...
Goal Apply geometric optics to correct nearsightedness. Problem A particular nearsighted patient can't see objects clearly when they are beyond 24 cm (the far point of the eye). (a) What focal length should the prescribed contact lens have to correct this problem? (b) Find the power of the lens, in diopters. Neglect the distance between the eye and the corrective lens. Strategy The purpose of the lens in this instance is to take objects at infinity and create an image...
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.
Find the power of the lens necessary to correct an eye with a far point of 24.7 cm (a) Find the power of the lens necessary to correct an eye with a far point of 24.7 cm (b) Find the power of the lens necessary to correct an eye with a far point of 55.0 cm
(a) Find the power of the lens necessary to correct an eye with a far point of 26.1 cm (b) Find the power of the lens necessary to correct an eye with a far point of 46.0 cm.
Without corrective lenses, a person's far point is 17.2cm and the power of their relaxed eye is 51.2 D. A lens is placed 1.85cm away from the eye. What power will the lens be to allow them to see objects at a distance? Can you explain why the relaxed eye has a power of +51.2? When they are nearsighted shouldn't diopters be negative??
For a normal eye, the near point is 25.0 cm. This is where you would like to place the printed material such as the newspaper to read. The far point is very far away. What type and focal length corrective contact lens should a nearsighted person whose far point is 80.0 cm wear? What is the power of this lens? What type and focal length corrective contact lens should a farsighted person wear if the persons near point is 60.0...
The near point of a person's eye is 56.0cm. (Neglect the distance from the lens to the eye.) (a) To see objects clearly at a distance of 26.0cm, what should be the focal length of the appropriate corrective lens? cm (b) To see objects clearly at a distance of 26.0cm, what should be the power of the appropriate corrective lens? diopters
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
1.) 1.)A nearsighted eye is corrected by placing a diverging lens in front of the eye. The lens will create a virtual image of a distant object at the far point (the farthest an object can be from the eye and still be in focus) of the myopic viewer where it will be clearly seen. In the traditional treatment of myopia, an object at infinity is focused to the far point of the eye. If an individual has a far...
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?