Table 1

Rating scale of sedation intensity

Score	Rating criteria		Pre-PM	30 minutes post-PM	15 minutes post-RBB	45 minutes post-RBB
P = placebo, M = midazolam, PM = premedication, RBB = retrobulbar block. Figures indicate number of patients graded.
1	No sedation	P	16	16	15	15
	Patient awake	M	15	12	10	14
2	Moderate sedation	P	0	0	1	1
	Patient drowsy, immediate reaction to speech	M	1	3	5	2
3	Marked sedation	P	0	0	0	0
	Patient asleep, no reaction to speech but immediate reaction to tactile stimuli	M	0	1	1	0
4	Strong sedation	P	0	0	0	0
	Reaction only to stronger tactile or acustic stimuli	M	0	0	0	0
5	Somnolent	P	0	0	0	0
	Difficulties in arousing the patient, immediately falling asleep again	M	0	0	0	0