Title: Analysis with Optical Coherence Tomography of the LASIK Flap created with the CarriazoPendular Micro
1Analysis with Optical Coherence Tomography of the
LASIK Flap created with theCarriazo-Pendular
Microkeratome
- Dr. Diego de Ortueta FEBO
- Medical Director
- Augenzentrum Recklinghausen
- Germany
- www.augenlaserzentrum.org
- Consultant Schwind eye-tech-solutions
ASCRS 2007 San Diego
2Purpose
- To evaluate the homogenity of a LASIK-flap cutted
with the Carriazo-Pendular Microkeratome (Schwind
eye-tech-solutions, Kleinostheim Germany).
Measurement had been performed with the Optical
Coherence Tomography VISANTE TM Carl Zeiss
Meditec (Jena, Germany).
3Optical Coherence Tomography
- Non contact procedure
- 1310 nm Infrared wavelength blocked by pigment
- We took 5 images per eye mode high resolution
cornea - Resolution of the system with /- 12µm
4Carriazo-Pendular Microkeratome
- Advance automated 2 Motors
- backwards without oscillation
- curved Blade
- Hinge position at 360 possible
- we perform a superior hinge
- We use the head 110µm ,130µm and 150µm
-
Carriazo-Pendular
5Linear Cut with the Carriazo- Pendular
Microkeratome
With other Microkeratomes we get a
circumferential movement
with the Pendular we get a linear movement
6Example of high resolution image after 1 week
LASIK
7We got a planar flap with the differents heads,
in this case the 110 head
8Image with the 130 Head showing also a planar cut
9quick transverse edge of entering in the desired
cutting plane.
10Conclusions
- With the Carriazo-Pendular Microkeratome we get
planar cuts - The limitation of the study is the resolution of
the system with /-12 µm which corresponds to the
standard deviation of the cut with the Carriazo
Pendular - After two weeks we had difficulties to recognize
and analyze the flap thickness