Methods and apparatus for determination and decrease of dynamic positioning errors of an ablating laser during refractive laser surgery
AssigneeSensoMotoric Instruments Gesellschaft fuer Innovative Sensorik mbH
InventorsWinfried Teiwes, Michael Huppertz, Ralf Weise, Jorg Jacobs
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Abstract
The above described apparatus and methods provide the possibility to reduce or even eliminate the effects of delay between image acquisition and laser ablation. Thus this will lead to less positioning errors and therefore to better ablation results in laser refractive surgery. The importance of this invention will increase with decreasing ablating beam diameter. The use of synchronization leads to shorter delay times. Hence it follows that the duration of the whole treatment decreases as well.
Claims10
Apparatus for synchronising a refractive laser system and an eye-tracking system, comprising
- a synchronisation signal generator which is connected to the refractive laser system and to the eye-tracking system, which provides a synchronisation signal to the refractive laser system triggering an ablation shot onto the eye being treated, and which provides a synchronisation signal the eye-tracking system triggering image acquisition,
- wherein the generation of the synchronisation signal occurs in accordance with a timing scheme.
Apparatus for synchronisation/triggering a refractive laser system used for eye surgery, comprising
- an eye-tracking system, comprising an imaging device for acquiring an image of the eye being treated;
- a synchronisation signal generator which is connected to the refractive laser system and to the eye-tracking system, which provides a synchronisation signal to the refractive laser system triggering an ablation shot onto the eye being treated, and which provides a synchronisation signal the eye-tracking system triggering image acquisition,
- wherein the generation of the synchronisation signals occurs in accordance with a timing scheme.
Dependencies are inferred from the claim text.