33 reactions | Pupillary Light Reflex Stimulus : light Sensory receptors: Photosensitive ganglionic cells in the retina Afferent: Optic nerve II Reflex center: Edinger-Westphal nucleus in the midbrain Efferent: oculomotor nerve III Effector : Iris Sphincter Muscle Response : Myosis (Pupillary constriction) | Human Medical Physiology | Facebook

1.9K views | The pupil-eye reflex, also known as the pupillary light...

MedWorld- Medical & Health on Instagram: "No, you cannot control your pupil size directly; pupil dilation and constriction are involuntary reflexes regulated by the autonomic nervous system in response to light and emotional states. However, some people can learn to change their pupil size indirectly by inducing changes in arousal, focusing their attention, or shifting their focus to near or far objects. The instagram post highlights a rare ability where an individual can consciously control the