The nurse administers proparacaine HCl (Ophthaine) drops to a patient prior to an eye examination. What sign will the nurse look for to determine when the examination can begin?
a. Absence of the blink reflex
b. Blurred vision
c. Drying of the corneal epithelium
d. Photophobia
ANS: A
Ophthaine is a topical anesthetic for the eye and causes loss of the blink reflex. Drying of the corneal epithelium is a side effect but occurs later as a result of the loss of the blink reflex. Blurred vision and photophobia result from mydriasis and miosis.
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