Treatment of corneal surface irregularities using biomask as an adjunct to excimer laser phototherapeutic keratectomy.

Purpose: To assess the clinical changes induced by the use of BioMask as an adjunct to phototherapeutic keratectomy (PTK) using the excimer laser.

Methods: A nonrandomized, prospective clinical trial was conducted. Twenty-two consecutive patients were enrolled for BioMask treatment with reduced visual acuity caused by irregular astigmatism or corneal scarring.