<prompt> Arden index is related toERG ElectroretinogramEOG ElectroculogramVER Visual Evoked responsePerimetry  <response>: Arden index is related to ElectrooculographyInterpretation 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 100Normal curve values are 185 or above.Subnormal curve values are less than 150.Flat curve values are less than 125. 