A nurse is teaching a patient who will begin using a fixed-dose preparation of dorzolamide and timolol (Cosopt) for open-angle glaucoma. Which statement by the patient indicates a need for further teaching?
a. "Blurred vision, tearing, or eye dryness may occur with this medication."
b. "I may experience a bitter taste in my mouth after instilling these eye drops."
c. "I will need to instill two eye drops 3 times daily in each eye."
d. "If I notice redness in my eyes or eyelids, I should stop using these drops."
ANS: C
The fixed-dose preparation of dorzolamide and timolol is given as 1 drop twice daily. Blurred vision, tearing, eye dryness, and a bitter aftertaste are expected side effects. Redness in the eyes or eyelids indicates an allergic conjunctivitis and means that the drops should be discontinued.
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