Sie Ag Surgical Instrument Engineering

Sie Ag, Sugical Instrument Engineering

Vincent Ducry

Christian Rathjen

Hartmut Kanngiesser

Lorenz Klauser

Michael Moritz

For processing eye tissue using a pulsed laser beam (L), an ophthalmological device includes a projection optical unit for the focused projection of the laser beam (L) into the eye tissue, and a scanner system upstream of the projection optical unit for the beam-deflecting scanning of the eye tissue with the laser beam (L) in a scanning movement (s') performed over a scanning angle along a scanning line(s). The projection optical unit is tilted about an axis of rotation (q) running perpendicularly to a plane defined by the scanning line(s) and the optical axis (o) of the projection optical unit, the tilting of the projection optical unit tilting the scanning line (s) in said plane. Tilting of the scanning line(s) enables a displacement&#x2014;dependent on the scanning angle&#x2014;of the focus of the laser pulses projected into the eye tissue without vertical displacement of the projection optical unit.

Device for processing eye tissue by means of a pulsed laser beam

For processing eye tissue using a pulsed laser beam (L), an ophthalmological device includes a projection optical unit for the focused projection of the laser beam (L) into the eye tissue, and a scanner system upstream of the projection optical unit for the beam-deflecting scanning of the eye tissue with the laser beam (L) in a scanning movement (s') performed over a scanning angle along a scanning line (s). The ophthalmological device includes a divergence modulator disposed upstream of the scanner system for dynamically varying the divergence of the laser beam (L), whereby the scanning line (s) is tilted in a plane running through the optical axis of the projection optical unit and the scanning line(s). The tilting of the scanning line(s) enables a displacement&#x2014;dependent on the scanning angle&#x2014;of the focus of the laser pulses projected into the eye tissue without vertical displacement of the projection optical unit.

An ophthalmological device () for processing eye tissue includes a projection optical unit for focused projection of a laser beam (L) into the eye tissue, and a scanner system upstream of the projection optical unit for beam-deflecting scanning of the eye tissue with the laser beam (L) in a scanning movement (s') performed over a scanning angle along a scanning line(s). The ophthalmological device includes at least one optical element upstream of the projection optical unit, the optical element configured to generate a divergence&#x2014;dependent on the scanning angle&#x2014;of the laser beam (L), the scanning line(s) tilted in a plane running through the optical axis of the projection optical unit and the scanning line(s). Tilting of the scanning line(s)displaces&#x2014;dependent on the scanning angle&#x2014;the focus of the laser pulses projected into the eye tissue without vertical displacement of the projection optical unit.

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Fribourg, Switzerland

Vincent Ducry