The maximum resolution of the eye depends on the diameter of the opening of the pupil (a diffraction effect) and the size of the light receptor cells (rods or cones) on the retina. The size of the retina determines the number of receptor cells available for capturing light. The resolution of the eye is limited by the spacing between these receptor cells. Which of the following factors primarily determines the maximum resolution of the eye?
1) Diameter of the opening of the pupil
2) Size of the light receptor cells
3) Size of the retina
4) Spacing between the receptor cells