Systems, devices, and methods for electrophysiological recording from the eye

An electroretinography device configured to detect a biopotential signal from an eye of a subject, the device comprising:

• an ocular member including:
• a proximal portion comprising a proximal outer surface extending radially inward along a distal direction and a proximal inner surface opposite the proximal outer surface, wherein, when the ocular member is disposed over the eye, the proximal inner surface is disposed over an anterior surface of the eye and the proximal outer surface is positioned adjacent an eyelid of the subject, wherein the proximal inner surface includes a recess feature configured to receive tears from the eye;
• and
• a distal portion coupled to the proximal portion, wherein the distal portion comprises a distal outer surface extending radially outward in the distal direction, and a distal inner surface opposite the distal outer surface and defining at least in part a distal recess;
• a conductive element in an annular channel of the proximal portion;
• and
• a signal relay operatively connected to the conductive element and configured to transmit the biopotential signal from the conductive element to a signal processor.