Synonymous with miosis, what is the term for constricted pupils?

The correct term for constricted pupils is indeed "constricted pupils," which is synonymous with miosis. Miosis refers to the physiological response where the pupils become smaller in diameter, which can occur due to various factors, including the influence of certain drugs, light exposure, and other physiological changes.

In the context of drug recognition, understanding miosis is critical as it is often associated with specific substances, such as opioids. Recognizing the term in its straightforward form as "constricted pupils" ensures clarity in communication, particularly in situations where specific drug effects need to be identified.

The other terms listed have different meanings or implications that do not directly describe the state of pupils as miosis does. For example, "pupillary reaction" generally refers to the overall response of the pupils to stimuli, rather than solely indicating their size as defined by miosis. "Opioid effect" describes a broader range of physiological changes due to opioids, while "visual impairment" refers to a decrease in the ability to see, clearly distinct from the size of the pupils. Thus, "constricted pupils" effectively defines the condition associated with miosis, making it the most accurate choice.