Table 6.

Comparison of Cognitive Performance by GCL + IPL Thickness Cut-off

Variable	GCL + IPL < 75 μm (n = 64)	CGL + IPL ≥75 μm (n = 72)	p
MoCA	20.3 (3.9)	23.7 (4.3)	< 0.001
Numbers Forward	6.4 (1.4)	7.1 (1.3)	0.006
Numbers Backward	4.5 (1.2)	4.9 (1.5)	0.053
HVLT-Immediate	15.7 (5.3)	18.9 (6.2)	0.001
HVLT-Delay	4.1 (3.3)	6.3 (3.5)	< 0.001
Trail making A, s	44.6 (19.9)	36.4 (22.6)	0.028
Trail making B, s	118.8 (48.2)	92.6 (44.3)	0.002
Number Symbol Coding	31.8 (11.2)	40.6 (11.8)	< 0.001
Animal Naming	15.4 (5.6)	17.9 (5.6)	0.011
MINT	14.4 (0.9)	14.2 (2.1)	0.377
Z-Score	−0.05 (0.8)	0.57 (0.7)	< 0.001
CDR-SB	2.7 (1.9)	1.3 (1.6)	< 0.001

Mean (SD). Bold signifies significance after correction for multiple comparisons (corrected p < 0.0042). GCL, ganglion cell layer; IPL, internal plexiform layer; MoCA, Montreal Cognitive Assessment; HVLT, Hopkins Verbal Learning Test; MINT, Multilingual Naming Test; CDR-SB, Clinical Dementia Rating Sum of Boxes.