instrument for measuring electrical activity in the retina
device to produce an electroretinogram
(ERG) (e-lek″tro-ret´ĭ-no-graf) an instrument for measuring the electrical response of the retina to light stimulation; its basic component is a contact lens containing an electrode, which is placed on the surface of the eye. Electrical activity of the retina is magnified and recorded a...
an instrument that measures the electrical response of the retina to light stimulation.