. Other limits to how small you can see are due to diffraction, which depends on the iameter of the pupil D, the wavelength of light (kn-0.5 um) and one\". Diffraction affects :uity for an object smaller than about (MD )onmu Your pupil changes size depending on 3w much light enters the eye. About what is the range of diameters of your pupil (you in look in a mirror of gaze (safely) into someone else's eyes