Table 2.

Cross-sectional thickness of the CC and its sub-regions.

	PHD controls (N=21)	PHD subjects (N=21)	PHD “far” (N=11)	PHD “near” (N10)	HD controls (N=19)	HD subjects (N=21)	HD1 (N=13)	HD2 (N=8)
CC1	8.86 ± 1.80	8.90 ± 1.38	9.26 ± 1.31	8.71 ± 1.41	9.24 ± 1.63	7.28 ± 1.24††	7.38 ± 1.02†	7.11 ± 1.61††
CC2	5.61 ± 0.95	5.56 ± 0.92	5.55 ± 0.93	5.44 ± 0.94	5.97 ± 0.89	4.93 ± 1.00**	5.00 ± 0.81*	4.83 ± 1.30#
CC3	5.24 ± 0.92	5.19 ± 0.99	5.47 ± 1.23	4.79 ± 0.61	5.70 ± 0.81	4.93 ± 0.84*	4.91 ± 0.67*	4.96 ± 1.11*
CC4	4.70 ± 0.89	4.28 ± 0.89	4.47 ± 1.23	4.05 ± 0.39	5.02 ± 1.05	3.99 ± 0.91**	3.99 ± 0.63*	3.98 ± 1.31*
CC5	7.74 ± 1.04	7.14 ± 1.03	7.33 ± 1.11	6.96 ± 1.07	8.23 ± 1.01	6.22 ± 0.84***	6.36 ± 0.82**	5.97 ± 0.86*

Data are presented at mean ± SD of the total thickness in millimeters in each of 5 sub-regions (CC1 to CC5, anterior to posterior).

Significant at

^††p < 10 ^-6,

^†p<10^-5

^***p < 0.001,

^**p < 0.005;

^*p<0.01,

^#p < 0.05 corrected for multiple comparisons as described in text.