alexa Angled Mushroom Pattern Femtosecond Laser Lamellar Kera
ISSN: 2155-9570

Journal of Clinical & Experimental Ophthalmology
Open Access

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Research Article

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 Huang3*

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: +15034945131
Fax: +15034943929
E-mail: [email protected]

Received date: June 06, 2012; Accepted date: July 09, 2012; Published date: July 15, 2012

Citation: Hsia T, Tang M, Pan B, Krumeich JH, Li Y, et al. (2012) Angled Mushroom Pattern Femtosecond Laser Lamellar Keratoplasty for Krumeich Ring Insertion: A Laboratory Study. J Clin Exp Ophthalmol 3:232. doi:10.4172/2155-9570.1000232

Copyright: © 2012 Hsia T, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Background and objective: The aim of this laboratory study was to investigate an alternative corneal trephination technique, femtosecond laser-enabled keratoplasty (FLEK), for inserting and stabilizing the depth of a metallic alloy intrastromal corneal ring (ISCR) for penetrating keratoplasty (PKP).
Patients and methods: The FLEK procedures were performed on eye bank corneas mounted on an artificial anterior chamber. An angled mushroom pattern cut formed an elbow to support 7.5- and 8.0-mm ISCRs at 300 μm depth. Optical coherence tomography (OCT) was used to visualize the position of the inserted ISCR.
Results: OCT images showed that the diameters of the femtosecond laser cut patterns matched the size of the respective ISCRs. Both rings rested stably on the corneal rims even prior to suturing. After suturing, the depths for the 7.5-mm and 8.0-mm ISCRs were measured by OCT to be 301.0 μm and 299.5 μm, respectively.
Conclusion: The angled mushroom pattern cut by femtosecond laser may improve the predictability and stability of the ISCR position within the wound in PKP performed by FLEK.

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