A patient receives topical atropine to facilitate an eye examination. The nurse will tell the
patient to remain in a darkened room or to wear sunglasses for several hours until the effects
of the medication wear off. This teaching is based on the nurse's knowledge that muscarinic
antagonists cause:
a. elevation of intraocular pressure.
b. miosis and ciliary muscle contraction.
c. paralysis of the iris sphincter.
d. relaxation of ciliary muscles.