Pressure from a pituitary adenoma may be exerted on the optic nerve, causing which of the following complications?
A) Blurred vision
B) Decreased tear production
C) Decreased intraocular pressure
D) Nystagmus
Ans: A
Feedback: Pressure from pituitary adenomas may be exerted on the optic nerves, as well as the optic chiasm, optic tracts, the hypothalamus, or the third ventricle when the tumors invade the cavernous sinuses or expand into the sphenoid bones. These pressure effects produce headache, visual dysfunction, hypothalamic disorders (eg, disorders of sleep, appetite, temperature, and emotions), increased intracranial pressure, and enlargement and erosion of the sella turcica.
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