The Use of MMC During PRK and Its Effect on Postoperative Topical Steroid Requirements

Summary

1. Purpose To evaluate the use of mitomycin-C (MMC) as an intraoperative adjunct during photorefractive keratectomy (PRK), its effect on postoperative healing and its ability to reduce the postoperative topical steroid course after the surgery. 2. Research Design This is a single-center, prospective, comparative cohort study. 3. Hypothesis There will not be a significant difference in the refractive corrections amongst the treatment groups, 12 months after surgery. 4. Objectives The primary study objective is to compare the effect of intraoperative MMC and a postoperative short topical steroid taper of 3 weeks, intraoperative MMC and a rapid topical steroid taper of 1 week, and a more commonly accepted postoperative regimen of a 2 month long topical steroid taper without any intraoperative MMC. The primary endpoint evaluated will be objective estimates of refractive error (WaveScan WaveFront™ System) at 12 months post-surgery. Secondarily, the extent of haze formation will be evaluated objectively using densitometry maps generated by automated Scheimpflug imaging of the cornea (Pentacam®). Furthermore, the subjective vision from the patients' perspective will be evaluated by questionnaires.

Timeline

Start

2014-08

Primary completion

2023-01

Completion

2023-07

Drugs

Indications