Abstract

P 075

Analysis of corneal morphology after femtosecond laser penetrating keratoplasty versus mechanical trepanation with Visante anterior segment optical coherence tomography

Naqadan F., Ehmer A., Foerster C., Holzer M. P., Auffarth G. U.
International Vision Correction Research Centre, Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Heidelberg

Objective: To study und to compare the profiles of corneal morphologies after femtosecond laser penetrating keratoplasty versus mechanical trepanation in patients with various corneal diseases.
Methods: The Zeiss Visante OCT anterior segment imaging system was used to study und to compare the profile of Corneal morphology after femtosecond laser penetrating keratoplasty versus mechanical trepanation in patients with various corneal diseases. 26 eyes from 24 patients were examined with Visante OCT: 9 eyes post femtosecond laser keratoplasty from 8 patients, 17eyes from 15 patients post mechanical trepanation. We looked at the doner- recipient  junction, adhesion, thickness discrepancy  und cutting quality.
Results: The eyes of femtosecond laser penetrating Keratoplasty had an average follow-up time of (15±6 Mo). The comparison  group of mechanical trepanation had a follow-up of (15±6Mo).  In both groups OCT Visante was able to detect thickness differences between doner and recipient cornea, analyse  cutting quality of femtosecond laser and mechanical devices, visualise  corneal doner- recipient connection very well even in same cases of cloudy cornea and it showed good cutting quality of the femtosecond laser.
Conclusions: The use of OCT in conjunction with other conventional instruments should provide a complete image of the cornea. differences between cutting quality could be detected.

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