Dexmedetomidine was Better at Lowering Intraocular Pressure than Magnesium when Combined with Local Anesthetics in Peribulbar Blocks for Posterior Segment Eye Surgery

Table 7: Comparison among the three groups as regard the VAS of pain.

VAS	Group C Median (IQR) (n=20)	Group M Median (IQR) (n=20)	Group D Median (IQR) (n=20)	Kruskal-Wallis	p-value
1 hr	3 (3-4)	2(1-2)	0 (0-0)^a	2.338	< 0.05*
2 hr	3 (3-5)	2 (2-3)^b	0 (0-0)^a	2.138	< 0.05*
3 hr	4 (3-5)	3 (2-5)	3 (2-5)	0.930	> 0.05
4 hr	4 (4-5)	3 (3-5)	3 (3-4)	0.913	> 0.05
5 hr	4 (3-5)	4 (2-5)	4 (3-5)	0.869	> 0.05
6 hrs	4(3-5)	4(2-5)	4(3-5)	0.869	> 0.05

*P value <0.05 Significant difference. Data are presented as median and IQR. (a) Significant between Group D and other two groups. (b) Significant between Group C and Group M.