December 2002
Volume 43, Issue 13
Free
ARVO Annual Meeting Abstract  |   December 2002
A New Fiber Optic Device for Non Mechanical Trephination with the 308 nm Excimer Laser
Author Affiliations & Notes
  • H Specht
    Ophthalmology Ruprecht-Karls-University of Heidelberg Heidelberg Germany
  • HE Voelcker
    Ophthalmology Ruprecht-Karls-University of Heidelberg Heidelberg Germany
  • FE Kruse
    Ophthalmology Ruprecht-Karls-University of Heidelberg Heidelberg Germany
  • Footnotes
    Commercial Relationships   H. Specht, None; H.E. Voelcker, None; F.E. Kruse, None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 4171. doi:
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      H Specht, HE Voelcker, FE Kruse; A New Fiber Optic Device for Non Mechanical Trephination with the 308 nm Excimer Laser . Invest. Ophthalmol. Vis. Sci. 2002;43(13):4171.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Abstract: : Purpose: Compared to mechanical methods, Excimer laser trephination for penetrating keratoplasty offers distinct advantages. However due to very demanding technical requirements the use of this method is currently limited to a few centers. Here we describe a simple trephine which can be used in conjunction with small, mobile, laser units. Methods: A motor driven trephine was developed which can be centered by use of a suction ring. It is used in conjunction with a fiber that is connected to a small, mobile, commercially available 308nm Excimer laser. In a pre clinical study freshly enucleated pig an human eyes were used. Conventional histology war performed following trephination with the Excimer laser trephine. Results: The laser trephine was reliably attached to the ocular surface by use of the suction ring. Both human and porcine corneas could be cut with a diameter up to 12 mm. Trephination stopped when aqueous humor penetrated through the wound. Histology showed smooth cutting edges and a zone of thermal damage that measured less than 10 micron. Conclusion: The new laser trephine system offers advantages over the current method of Excimer laser trephination and its practicability should allow widespread clinical use.

Keywords: 369 cornea: clinical science • 454 laser • 607 transplantation 
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