Effects of Preoperative Intravenous Clonidine in Patients Undergoing Cataract Surgery: A Double-Blind, Randomized Trial

Table 3

Sedation (Ramsay Scale), mean (SD).

Time points	Clonidine; ()	Placebo; ()
Incision of the cornea	3.0 (0.5)	2.1 (0.3)	0.001
Irrigation-aspiration	2.8 (0.6)	1.9 (0.2)	0.001
Lens implantation	2.7 (0.6)	1.9 (0.2)	0.001

Mann-Whitney test.