Preservative-free Topical Anesthetics for Post-PRK Pain

"For each patient, one eye was treated with preservative-free Benoxinate hydrochloride 0.4%.~The prescribed regimen comprises of the instillation of one drop immediately, 2, 4, 6 and 8 hours after the end of surgery.~Every patient was given 5 UD vials only of preservative-free Benoxinate hydrochloride 0.4% at each follow up visit for the next postoperative day usage administered 5 times daily (every 3 hours while awake) for the first 3 postoperative days giving clear instructions to immediately discard the vial after single use."

"The other eye was treated with preservative-free Sodium hyaluronate 0.2%. The prescribed regimen comprises of the instillation of one drop immediately, 2, 4, 6 and 8 hours after the end of surgery.~Every patient was given 5 UD vials only of preservative-free Sodium hyaluronate 0.2% at each follow up visit for the next postoperative day usage administered 5 times daily (every 3 hours while awake) for the first 3 postoperative days giving clear instructions to immediately discard the vial after single use."