Mean Area-under-the-Curve (AUC) Analysis of Change From Baseline in Pupil Diameter (mm/min) During Surgery Excluding Subjects with In-evaluable Videos.

Mean AUC Analysis of Postoperative pain as measured using the Alder Hey Triage Pain Score at 3, 6, 9, and 24 hours after surgery. The primary analysis of Alder Hey Triage Pain Score was similar to the primary analysis of the change in pupil diameter using AUC. The Alder Hey Triage Pain Score identifies five categories of observations: voice/cry, facial expression, posture, movement, and color. Each of these has a possible score of 0, 1, or 2, resulting in a total score ranging between 0 and 10. A total score of zero means the subject experienced no pain, as the 5 categories added up totals zero. A total score of 10 means the subject experienced a lot of pain and is the worst possible outcome, as the 5 categories added up totals 10. Parent responses in a diary with a score of 0, 1, or 2. 1. Cry or voice, 0=no compliant/cry, 1=Consolable, 2=Inconsolable 2. Facial Expression, 0=Normal, 1=Short grimace \<50% of time, 2=Long grimace \>50% of time 3. Posture, 0=Normal, 1=Touching/rub

Safety as assessed by the incidence of adverse events and serious adverse events up until the last visit at Day 90.