Ophthalmologic laser device and method for preventing and treating aftercataract

An ophthalmologic laser device comprising:

• a pulsed laser configured to produce treatment laser pulses of a predetermined pulse energy that propagate along a treatment beam path;
• a focusing lens system disposed in the treatment beam path;
• a variably adjustable beam deflector unit disposed in the treatment beam path and configured to deflect the treatment laser pulses to different volumes;
• a measuring equipment configured to determine a shape and position of optical interfaces along a detection beam path;
• and
• a controller configured to control the pulsed laser and the variably adjustable beam deflector unit, the controller being configured to:
• determine, using the measuring equipment, a shape and position of at least one interface of a membrane of a capsular bag of an eye located in a treatment area,
• determine, based on the predetermined pulse energy, an effect distance over which a hypothetical pressure wave, which would be induced by irradiation of tissue in an interior space of the capsular bag of the eye with a laser pulse of the predetermined pulse energy, must propagate before an intensity of the hypothetical pressure wave has decreased to a level insufficient to tear the membrane of the capsular bag of the eye but sufficient to cause a photodisruption-free, non-linear interaction with the membrane that detaches cells or molecules from the membrane or deactivates the cells or molecules,
• determine, as a function of the effect distance, coordinates of a center of a target volume, the center of the target volume being located at the effect distance from the at least one interface of the membrane of the capsular bag of the eye, and
• adjust the deflector unit so as to deflect the treatment laser pulses produced by the pulsed lasr to the target volume.