Apparatus for cutting a tissue section of an eye by laser radiation

An apparatus for stabilizing an eye, comprising:

• a suction-ring unit defining a central opening and a ring axis, the suction-ring unit comprising:
• a suction ring comprising:
• a plurality of sealing surfaces, each sealing surface configured to contact a sclera of the eye but not a cornea of the eye such that the sealing surfaces and the sclera define a suction chamber that does not come into contact with the cornea;
• and
• a first evacuation channel configured to evacuate the suction chamber to create a first vacuum in the suction chamber, the first vacuum coupling the suction-ring unit to the sclera to allow the cornea to receive laser radiation from a laser device while free from contact with the apparatus and free from contact with the first vacuum;
• and
• an insertion funnel extending from the suction ring along the ring axis;
• and
• an interface unit separate from the suction-ring unit and configured to:
• be inserted at least partially into the insertion funnel into coupling contact with the suction-ring unit, but does not touch the cornea, to allow the cornea to receive the laser radiation while free from contact with the apparatus;
• and
• couple to optics that focus the laser radiation towards the cornea through the central opening of the suction-ring unit.