What is mydriasis?

Mydriasis refers to the condition of having abnormally large pupils. This enlargement of the pupils can occur due to various factors, including the influence of certain drugs, emotional responses, or medical conditions. In pharmacology, substances such as stimulants (like cocaine or amphetamines) and anticholinergic medications can induce mydriasis by blocking the effects of acetylcholine, which normally constricts the pupils.

Understanding mydriasis is essential for drug recognition experts, as it can provide critical information when assessing an individual's impairment or state due to substance use. This condition can also help differentiate between various types of drug effects in a clinical or forensic setting, making it an important concept in the field.