Although radial keratotomy is a simple surgical procedure, a number of serious complications has been reported after it. In this paper, we describe three patients who had undergone radial keratotomy and developed postoperative micotic keratitis. The fungal agents isolated were Acremonium sp, Aspergillus sp and Fusarium solani. Besides the medical therapy, all cases required penetrant keratoplasty for resolution of the disease with good results (average follow up of 28 months). We discuss some aspects of the corneal healing process and the importance of advising patients about complications of radial keratotomy such as infectious keratitis.