Pupillary Diameter Under Different Concentrations of Propofol

Pupillary Diameter Without Stimulation Under Different Concentrations of Propofol Alone

Resting pupillary diameter was measured at a randomized Effect-site target concentration of propofol used as a sole anesthetic.

Inclusion Criteria:

• patient who has reached puberty
• ASA I or II who is scheduled for elective surgery under general anesthesia

Exclusion Criteria:

• neurologic, metabolic, ocular disease
• chronic pain
• under medication that interferes with autonomic nervous system
• obesity
• patient requiering a rapid sequence induction