METHOD AND ASSEMBLY FOR RECALIBRATING THE FOCUS OF AN OPHTHALMOLOGICAL SYSTEM FOR INTRAOCULAR LASER TREATMENT

The present invention relates to a solution for recalibrating the focus of an ophthalmological laser treatment system which, in addition to a treatment laser unit, an imaging unit, and an optical system for focussing and beam superimposition, also has an OCDR system and a control unit. According to the invention, a target laser beam of the laser treatment system is focussed on at least one target structure ZS1 in the eye to be treated by changing the distance A between the laser treatment system and the eye until it is detected that the target laser beam of the laser treatment system is focussed on the target structure ZS1. For any number of selected values of a change in distance ΔA between the laser treatment system and the eye, each focus position PF to be adopted of the laser beam of the laser treatment system in the OCDR signal profile is estimated approximately, using the parameters A1 and PZS1, on the basis of the distance A1 of the position of a selected reference structure PRS, as well as on the basis of the position of the target structure PZS1 in the OCDR signal profile, in each case relative to a reference plane RE.