Table 5. Comparison of mALCSD between POAG patients and normal healthy (control) subjects.

Clock hour	POAG (µm)	Control (µm)	p *
3	252±94	194±68	0.001
4	238±81	198±57	0.005
5	262±95	199±52	<0.001
6	294±92	199±47	<0.001
6.5	286±95	201±50	<0.001
7	253±98	184±48	<0.001
8	196±80	167±60	0.046
9	200±83	148±53	<0.001
10	245±77	190±60	<0.001
11	297±84	226±61	<0.001
11.5	316±84	233±57	<0.001
12	326±101	252±58	<0.001
1	313±105	236±66	<0.001
2	284±97	220±63	<0.001
Mean†	232±63	187±40	<0.001

^* p values were calculated by the independent-t test. ^†Mean value was obtained by the average of every half clock hour meridian, although only half of the total measurements were displayed on this table.

mALCSD  =  marginal anterior lamina cribrosa surface depth; POAG  =  primary open angle glaucoma.