The Nurse Is Preparing a Client for an Electroretinogram (ERG)

The nurse is preparing a client for an electroretinogram (ERG) to confirm a diagnosis of retinitis pigmentosa. Which explanation should be included in the preparation of this client?

A) "You will be placed in a brightly lit room for this test."
B) "Radiopaque dye will be injected into your eye before the test."
C) "A contact lens containing an electrode will be placed on your eye."
D) "You will see a bright beam of light directed at your eye."