Beta Blockers USMLE Step 1 Practice Question

A 24-year-old woman with no significant past medical history presents to an ophthalmology clinic for a routine retinal examination. Prior to fundoscopic evaluation, she receives eyedrops that produce mydriasis without cycloplegia. Approximately 20 minutes after administration, her blood pressure is measured at 148/92 mmHg with a heart rate of 88 bpm; prior office visits documented a baseline blood pressure of 118/74 mmHg. She reports mild palpitations but denies headache, blurred near vision, or difficulty reading, indicating preserved accommodation. Slit-lamp examination reveals widely dilated pupils with intact lens focusing. Intraocular pressure is measured at 14 mmHg bilaterally by applanation tonometry. She denies prior use of beta-blockers, antihypertensives, or sympathomimetic medications. Which of the following drugs was most likely instilled?