To achieve rapid pupillary constriction during a surgical procedure, which substance is injected intraocularly?

Study for the Ophthalmic Surgical Assistant Exam. Test yourself with flashcards and multiple choice questions, each question provides hints and explanations. Ace your exam!

The correct choice for achieving rapid pupillary constriction during a surgical procedure is acetylcholine. Intraocular administration of acetylcholine leads to immediate and effective constriction of the pupil due to its strong action on muscarinic receptors in the iris sphincter muscle. This prompt response is particularly beneficial in surgical settings where quick changes in pupil size are often required for optimal visualization and access to the surgical field.

Acetylcholine acts quickly because it is a neurotransmitter that directly stimulates the receptors involved in the constrictive response of the pupil. This makes it the preferred choice among the options listed when rapid action is necessary, especially in procedures such as cataract surgery or other intraocular interventions.

Pilocarpine, while also effective for inducing pupillary constriction, has a slower onset and is typically used for more prolonged effects rather than the immediate response needed in surgery. Understanding the pharmacodynamics of these agents is crucial for optimal intraoperative management and outcomes.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy