The pupillary reflex allows the eye to adjust the amount of light reaching the retina and protects the photoreceptors. There are two types of pupillary reflexes: the pupillary light reflex and the pupillary accommodation reflex. The pupillary light reflex causes constriction of the pupil in response to light, either directly in the light-stimulated eye or indirectly in the other eye. The pupillary accommodation reflex causes constriction of the pupil, convergence of the eyeballs, and bulging of the lens when focusing on a near object.