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

Table 3

Comparison of mean retinal nerve fibre layer thickness of the right eye between AD patients and control.

RNFL thickness (μm)	AD (N = 25) mean (SD)	Control (N = 25) mean (SD)	t	Means difference	Confidence interval 95%		df	value
					Lower	Upper
Average	45.28 (3.61)	54.38 (5.20)	7.190	9.100	6.547	11.653	42.80	<0.001
Superior	54.44 (2.85)	60.36 (4.11)	5.925	5.920	3.905	7.935	42.73	<0.001
Inferior	47.11 (4.52)	52.64 (4.27)	4.444	5.528	3.027	8.028	48.00	<0.001

Independent t-test.