Gold Lens (Adult): A non-sterile corneal electrode intended to be applied to the eye to detect the electrical response of the retina after a photic or other stimulus. It is typically in the form of a silver or gold electrode applied to the surface of the eye on or near the cornea. The general device that records this electrical activity is the electroretinograph (ERG).

Gold Lens (Pediatric): A non-sterile corneal electrode intended to be applied to the eye to detect the electrical response of the retina after a photic or other stimulus. It is typically in the form of a silver or gold electrode applied to the surface of the eye on or near the cornea. The general device that records this electrical activity is the electroretinograph (ERG).

A non-sterile electrical conductor intended to be applied adjacent to the eye to transmit an electrical signal during an evaluation of the eye's retina. It is typically in the form of a conductive thread that is laid along the lower eyelid in contact with the tear film and cornea. The general device that records this electrical activity is the electroretinograph (ERG). This is a single-use device.

The ERG-Jet is a contact lens for performing an electroretinogram, or ERG, provocated by light stimulation of the retina in either humans or animals. The electrode is made of a gold ring just a few angstroms (10-10 meter) thick, which can be safely placed in contact with the cornea using a viscous conductive liquid.