pupillaméret

Pupillometry is the measurement of pupil size. This can be done manually by comparing the pupil to a chart or automatically using a pupillometer, an electronic device. Pupil size is influenced by various factors, including light levels, emotional state, cognitive load, and the presence of certain drugs. In bright light, pupils constrict to reduce the amount of light entering the eye, while in dim light, they dilate to allow more light in.

Pupillometry has applications in several fields. In ophthalmology, it helps assess the health of the optic nerve and detect certain neurological conditions. It can also be used to evaluate the effectiveness of eye drops and to monitor eye movements. In psychology and cognitive science, pupillometry is employed to study attention, cognitive effort, and emotional responses. Changes in pupil size can indicate increased mental workload or engagement with a task.

The pharmaceutical industry uses pupillometry to study the effects of medications, particularly those affecting the autonomic nervous system, which controls pupil dilation and constriction. Forensic science may also utilize pupillometry in certain investigations. The interpretation of pupil size changes requires careful consideration of the context and potential influencing factors to draw accurate conclusions.