Study Status: Completed
Recruit Status: Completed
Study Type: Interventional
Official Title: A Phase 2 Study Comparing the Occurrence of Actinic Keratoses on the Face in High-Risk Individuals After Cryotherapy + Photodynamic Therapy With Levulan Topical Solution +
Brief Summary: The purpose of this study is to determine if Levulan photodynamic therapy (PDT) is safe and effective in the treatment of actinic keratoses on the face, following treatment with liquid nitrogen cryotherapy.