This simulation demonstrates how the pupillary light reflex pathway converts a change in light intensity into a measurable change in pupil diameter through the retina, midbrain, and iris muscles.
Adjust the light intensity and watch how the pupil size responds in real time, and try toggling single-eye illumination to see the consensual reflex in action.
Use the light intensity slider and eye-selection toggle to control the stimulus and observe the resulting direct and consensual pupillary responses.
The pupillary light reflex is so fast and involuntary that it still functions in unconscious patients, which is why it is used as a bedside indicator of brainstem health.
This simulation demonstrates how the pupillary light reflex pathway converts a change in light intensity into a measurable change in pupil diameter through the retina, midbrain, and iris muscles.
This simulation demonstrates how the pupillary light reflex pathway converts a change in light intensity into a measurable change in pupil diameter through the retina, midbrain, and iris muscles.
Adjust the light intensity and watch how the pupil size responds in real time, and try toggling single-eye illumination to see the consensual reflex in action.
The pupillary light reflex is so fast and involuntary that it still functions in unconscious patients, which is why it is used as a bedside indicator of brainstem health.