Evaluation of Retinal Nerve Fiber Layer Thickness, Electroretinogram and Visual Evoked Potential in Patients with Alzheimer’s Disease

Table 7

Comparison of PVEP reading of the right eye between AD patients and control.

PVEP parameters	AD (N = 25) mean (SD)	Control (N = 25) mean (SD)	t	Means difference	Confidence interval 95%		df	value
					Lower	Upper
N75 (ms)	77.40 (11.03)	74.04 (10.88)	−1.085	−3.36	−9.589	2.869	48.00	0.284
P100 (ms)	119.00 (9.07)	106.68 (10.53)	−4.431	−12.32	−17.910	−6.730	48.00	<0.001
N135 (ms)	145.20 (8.53)	130.20 (7.94)	−6.437	−15.00	−19.685	−10.315	48.00	<0.001
P100 -wave (μV)	3.71 (1.60)	9.78 (2.82)	9.363	6.07	4.760	7.386	37.94	<0.001
N135 -wave (μV)	3.67 (2.02)	10.52 (3.49)	8.498	6.85	5.218	8.481	38.52	<0.001

Independent t-test.