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Q: Fachverband Quantenoptik und Photonik
Q 41: Ultrashort Laser Pulses: Applications III
Q 41.1: Vortrag
Mittwoch, 10. März 2010, 16:30–16:45, F 342
Adaptive Optics for the Correction of Eye Aberrations — •Anja Hansen1, Mohammed K. Khattab1, Raoul-Amadeus Lorbeer1, Holger Lubatschowski1, and Ronald R. Krueger2 — 1Laser Zentrum Hannover, Hollerithallee 8, 30419 Hannover, Germany — 2Cole Eye Institut, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, USA
In ophthalmology, femtosecond laser tissue transections (photodisruption) which do not provoke any damage to the retina are currently limited to the cornea or lens. In order to not harm the retina during laser application, the laser focus needs to be either a safe distance apart from the retina or the threshold energy for the tissue interaction needs to be low enough to not destruct any peripheral tissue. For surgery in the direct vicinity of the retina the threshold energy has to be reduced to a safe level. However, the aberrations of the anterior elements of the eye cause a distortion of the wavefront and therefore a raised threshold energy when focussing into the posterior segment. We present an optical system that allows for correcting aberrations in eyes using adaptive optics consisting of a deformable mirror and a Hartmann-Shack-Sensor with a novel light source. If combined with femtosecond laser pulses this system offers the possibility for minimally invasive laser surgery in the posterior eye segment with minimized threshold energy. This offers a minimally invasive alternative to the current invasive standard vitrectomy which is very traumatic and causes complications like cataract formation which could be avoided with laser surgery.