The nurse is preparing a patient for an ophthalmic examination. Which action occurs when the nurse instills eyedrops to produce mydriasis?
a. Drying of tears in the eyes
b. Extreme dilation of the pupil
c. Opening of the canal of Schlemm
d. Paralysis of the ciliary muscle
ANS: B
Dilating the eye before eye examinations allows for better visualization of the interior of the globe. Anticholinergic drugs may produce drying of tears in the eye as an adverse effect of use. Obstruction of the canal of Schlemm results in glaucoma. Paralysis of the ciliary muscle is cycloplegia.
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