A contact lens prescription calls for +2.25-diopter lenses with inner curvature radius 8.6mm to fit the patient’s cornea.
(a) If the lenses are plastic with n = 1.56, what should be the outer curvature radius?
(b) With these lenses, the patient comfortably reads a newspaper 30 cm from her eyes. Where’s the image as viewed through the lenses?