A Comparison of Endothelial Cell Loss in Combined Cataract and MIGS (Hydrus) Procedure to Phacoemulsification Alone: 6-Month Results

Table 2

Difference and statistical analysis between preoperative and postoperative parameters (mean ± standard deviation; CD: cell density; SD: standard deviation; CV: coefficient of variation; 6A = hexagonality coefficient).

Group	Parameters	CD	SD	CV	6A
1	Preoperative	2361.7 ± 477.9	171.8 ± 84.2	37.6 ± 9.8	57.6 ± 10.5
	Postoperative	2147.3 ± 455.7	178.7 ± 63.9	38.1 ± 8.7	51.4 ± 10.1
	Difference	−214.4 ± 362.6	6.92 ± 77.1	0.52 ± 10.2	−6.24 ± 11.9
	-test	2.956	0.449	0.256	2.607
	value	0.007	0.658	0.800	0.015
2A	Preoperative	2234.5 ± 344.7	173.8 ± 63.4	36.9 ± 9.8	55.5 ± 13.1
	Postoperative	1872.4 ± 393.5	216.7 ± 66.3	37.8 ± 8.1	55.9 ± 8.9
	Difference	−362.1 ± 316	42.9 ± 71.2	0.95 ± 11.1	0.47 ± 11.9
	-test	4.995	2.63	0.373	0.173
	value	<0.001	0.017	0.713	0.865
2B	Preoperative	2476.2 ± 300.6	155.5 ± 41.9	37.3 ± 8.2	56.3 ± 7.5
	Postoperative	2185.8 ± 393.1	170.8 ± 50.1	36.2 ± 7.5	62.5 ± 10
	Difference	−290.3 ± 322.4	15.3 ± 62.6	−1.1 ± 12	6.2 ± 12.2
	-test	4.592	1.25	0.459	2.573
	value	<0.001	0.224	0.65	0.016