• E.g. tropicamide, cyclopentolate, homatropine, scopolamine, atropine

  • Cause mydriasis (by paralyzing the iris sphincter muscle) with cycloplegia (by paralyzing the ciliary muscle)

  • Uses: fundoscopy, cycloplegic refraction, anterior uveitis

  • Side effects:

    • Local: allergic reaction, blurred vision
    • Systemic: constipation, urinary retention, dry mouth, dry skin, dry eyes, and confusion
    • In children: flushing, fever, tachycardia, or delirium

Red as a beet Hot as a hare

Blind as a bat Dry as a bone

Mad as a hatter Full as a flask