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

Table 1

Cohen strength of association.

Coefficient value	Strength of association
0.1 < r < 0.3	Small/weak correlation
0.3 < r < 0.5	Fair/moderate correlation
R > 0.5	Large/strong correlation