Device for ophthalmologically treating the eye using a fixation light beam

Abstract

A device for ophthalmologically treating the eye has a treatment laser beam (UV) for ablating parts of the cornea ( 12 ) and a fixation light beam ( 24 ). A fixation light spot in the vicinity of the fovea ( 30 ) and the fovea are imaged by means of a camera ( 40 ). This makes it possible to check whether the patient has reliably fixated the fixation light source ( 22 ). In addition, the pupil can be recorded and both recordings can be superimposed.

1 . Device for ophthalmologically treating the eye, comprising 
 a treatment laser beam (UV) for ablating parts of the cornea ( 12 ) and    a fixation light beam ( 24 ) that is provided to be fixated by the patient,    characterized by 
 a camera ( 40 ) for imaging a light spot (Sp) generated by the fixation light beam ( 24 ) on the retina, in particular the fovea, and the fovea (F).  
   
     
     
         2 . Device according to  claim 1 , characterized by a device ( 36 ) for imaging the pupil ( 18 , P) in such a way that the image of the light spot (Sp) of the fixation light beam ( 24 ) and the image (P) of the pupil are superimposed.  
     
     
         3 . Device according to  claim 2 , characterized in that the device for imaging the pupil is the said camera.  
     
     
         4 . Device according to  claim 2 , characterized in that the device for imaging the pupil is a second camera ( 40 ).  
     
     
         5 . Device according to  claim 4 , characterized in that the second camera ( 40 ) is also assigned to an eye tracker.