Table 1.

Summary of study demographics and relevant surgical information

Parameter	Group size (n = 200), n (%)	Mean ± SD
Age (y)		72.6 ± 9.3
30-69	64 (32.0)
70-79	93 (46.5)
80+	43 (21.5)
Sex
Male	99 (49.5)
Female	101 (50.5)
Length of each surgery
First eye	200 (100)	15.4 ± 4.3 min
Second eye	200 (100)	14.9 ± 4.5 min
Surgical anesthesia
M/F/O only	190 (95.0)
M/F/O + other	10 (5.0)
Top off before second surgery	135 (67.5)
No top off before second surgery	65 (32.5)

M/F/O = midazolam, fentanyl, and oxygen; other medications used included ephedrine, ativan, labetalol, phenylephrine, or ondansetron