Pupillary response refers to the constriction or dilation of the pupil in response to changes in light or other stimuli. There are several synonyms that could be used to describe this phenomenon, such as pupillary reflex, pupil reaction, iris reflex, or simply pupil response. These terms all describe the same process of the pupil changing in size in response to various stimuli. The pupillary response is an important diagnostic tool for medical professionals, as abnormal responses can indicate neurological disorders or other health issues. Understanding different synonyms for pupillary response can help to better communicate clinical observations and improve patient care.