Which two classes of drugs are commonly used to dilate the pupil for ocular examination, and what is an important caution when using them?

• A. Phenylephrine and tropicamide; caution in narrow-angle or uncontrolled glaucoma and in patients with systemic sensitivities.
• B. Tropicamide and pilocarpine; caution in closed-angle glaucoma.
• C. Atropine and epinephrine; caution in diabetics.
• D. Cyclopentolate and brimonidine; caution in hypertension.

Answer: (A)