Arden index is related to –
Arden index is related to Electrooculography
Interpretation of results:- Results of EOG are interpreted by finding out the Arden ratio as follows :

Arden ratio = Minimum height of light peak / Minimum height of dark trough  x 100

Normal curve values are 185 or above.
Subnormal curve values are less than 150.
Flat curve values are less than 125.
ERG (Electroretinogram)
EOG (Electroculogram)
VER (Visual Evoked response)
Perimetry