During ocular examinations, what should the nurse keep in mind regarding the movement of the extraocular muscles?

A. Is impaired in a patient with cataracts: Cataracts primarily cause lens opacity, leading to blurry vision and reduced acuity. They do not directly affect extraocular muscle function, which is controlled by cranial nerves rather than the lens. B. Is always decreased in the older adult: Aging can cause minor changes in eye movement speed and coordination, but significant impairment is not inevitable. Extraocular muscle function remains intact unless affected by neurological conditions such as cranial nerve palsy. C. Is stimulated by cranial nerves (CNS) I and II: Cranial nerve I (olfactory) is responsible for smell, and cranial nerve II (optic) transmits visual signals to the brain. Neither nerve controls eye movement, which is instead governed by different cranial nerves. D. Is stimulated by cranial nerves III, IV, and VI: The oculomotor (III), trochlear (IV), and abducens (VI) nerves control extraocular muscle movement. They coordinate eye positioning, alignment, and smooth tracking, ensuring proper function of the visual system.