The patient is suffering from glaucoma and is scheduled to begin treatment with carbachol (Car-boptic). The health care provider knows to monitor the patient closely for evidence of which ef-fect of the drug?
a. Dilation of the iridic sphincter
b. Increased outflow of aqueous humor
c. Mydriasis
d. Vasoconstriction of collecting channels
ANS: B
Carbachol is a cholinergic miotic drug that increases outflow of aqueous humor by contracting the iridic sphincter, causing miosis and vasodilating blood vessels and collection channels periph-eral to the canal of Schlemm.
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