The invention relates to a laser surgical ophthalmological apparatus comprising a source of pulsed femtosecond laser radiation, components for guiding and focusing the laser radiation onto or into a tissue of an eye under treatment, and a control unit that controls the source and is designed to switch the source between at least two modes of operation in which the laser radiation has different characteristics, the characteristics of the laser radiation being modulated so as to make an incision in the tissue in a first mode of operation while being modulated so as to weld or interlink the tissue in a second mode of operation.
