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

An electroretinography device, comprising:

• an ocular member configured to detect a biopotential signal from an eye of a subject, the 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;
• 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 a distal recess;
• and
• a film positioned at the distal recess, wherein the film has a concave shape configured to conform to at least a portion of a cornea of the eye, wherein an intermediate portion of the film has a first transparency, and wherein a peripheral portion of the film has a second transparency less transparent than the first transparency;
• a conductive element in a 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.

An electroretinography device, comprising:

• an ocular member configured to detect a biopotential signal from an eye of a subject, the 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;
• and
• a distal portion coupled to the proximal portion, wherein the distal portion comprises a distal outer surface and a distal inner surface opposite the distal outer surface and defining at least in part a distal recess, wherein the recess includes an opening extending through the ocular member in the distal direction;
• 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.