Please help.

What is the power P of the eye when viewing an object 45.0 cm away? Assume the lens-to-retina distance is 2.00 cm, and express the answer in diopters. The pupil of the eye is the circular opening through which light enters. Its diameter can vary from about 8.00 mm to about 2.00 mm to control the intensity of the light reaching the interior. Calculate the angular resolution, OR, of the eye for light that has a wavelength of 568 nm in both bright light and dim light. At which light level is diffraction less of a limiting factor in the sharpness of a person's vision? 0 More information is needed to answer. Q bright O Diffraction is equally a factor in both intensities of light. Odim