Angled Mushroom Pattern Femtosecond Laser Lamellar Keratoplasty for Krumeich Ring Insertion: A Laboratory Study

Timothy Hsia¹, Maolong Tang³, Billy Pan¹, Jorg H. Krumeich², Yan Li³ and David Huang^3*

¹Doheny Eye Institute and Department of Ophthalmology, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA

²Clinic Krumeich (Krumeich), Bochum, and the University Hospital Halle (Duncker), Halle, Germany

³Casey Eye Institute, Oregon Health and Science University, 3375 SW Terwilliger Blvd, Portland, USA

^*Corresponding Author: David Huang, Casey Eye Institute, Oregon Health and Science University, 3375 SW Terwilliger Blvd, Portland, USA, Tel: +1 503 494 5131, Fax: +1 503 494 3929 Email: