What is the action of timolol maleate (Timoptic), a beta-adrenergic blocking agent?
a. Draws aqueous humor from the eye into the circulatory network
b. Increases the production of aqueous humor
c. Increases the outflow of aqueous humor
d. Decreases the production of aqueous humor
ANS: D
Timolol maleate is a beta-adrenergic blocking agent used to reduce increased intraocular pressure. The exact mechanism of action of these medications is unknown, but they are believed to reduce the production of aqueous humor. Timolol is believed to decrease production of aqueous humor.
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