A far-sighted person has a near point of 1.0 m. What prescription glasses are needed to correct her vision?

Darcy suffers from farsightedness equally severely in both eyes. The focal length of either of Darcy's eyes is 18.9 mm in its most accommodated state (i.e, when the eye is focusing on the closest object that it can clearly see) What lens strength (a.k.a., lens power) of contact lenses should be prescribed to correct the farsightedness in Darcy's eyes? When wearing her contact lenses, Darcy's corrected near point should be 25.025.0cm. (Assume the lens-to retina distance of Darcy's eyes is 2.00 cm, and the contact lenses are placed a negligibly small distance from the front of Darcy's eyes)   Answer choices: a) 2.45 D  b) 1.09 D c) 1.37 D d) 3.49 D e) 1.92 D

Problem 103. A) How do the lenses in glasses designed to correct nearsighted eyes with no astigmatism differ from the lenses designed to correct nearsighted eyes with astigmatism? B) Why can reshaping the cornea with a laser correct the far vision of a nearsighted person?

What power of spectacle lens is needed to correct the vision of a nearsighted person whose far point is 40.0 cm? Assume the spectacle (corrective) lens is held 1.80 cm away from the eye by eyeglass frames

A far-sighted patient has contacts' prescription for +3.00 D, and this prescription gives her a perfect vision. What is her near point?

A nearsighted person has a far point of 25.3cm 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.