The nurse is preparing a client for an electroretinogram (ERG) to confirm a diagnosis of retinitis pigmentosa. Which of the following explanations would be appropriate preparation for 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."
C
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During an electroretinogram, a contact lens containing the electrode (measuring device) is placed on the eye. The client's head is under a "cone," and much of the test is done while the room is dark. Radiopaque dye is injected before a retinal angiogram and a slit lamp is a special type of microscope that directs a beam of light onto or through the cornea to view the eye's anterior structures.
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