When assessing a client's interior eye structures with an ophthalmoscope, which action should the nurse use?

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When assessing a client's interior eye structures with an ophthalmoscope, the nurse should ADJUST THE DIOPTERS.
Ophthalmoscope or a funduscopy is a device that allows a health professional to see the internal structures of a patient's eye. A diopter is used to adjust the retina into the focus if the client is suffering from any errors of refraction. It corresponds to the magnification power of the ophthalmoscopic lens and thus can be used with an ophthalmoscope.