Each morning, a nurse at a Louisiana surgery center would mix a fresh batch of dilating and anesthesia drops in preparation for the day's cataract cases: 5mL 2% lidocaine gel, 4 gtts Mydriacil, 4 gtts 1% cyclogel, 4 gtts 10% neosynephrine, 10 gtts Vigamox and 4 gtts Acular. She'd place the mixture in sterile syringes, and staff would administer the drops twice before patients entered the OR. At day's end, she'd discard any leftover mixture.