Treatment apparatus for operatively correcting defective vision of an eye, method for generating control data therefor, and method for operatively correcting defective vision of an eye

A treatment apparatus for operatively correcting refractive error in an eye, the treatment apparatus comprising:

• a laser device which is controlled by a control device;
• the laser device separating corneal tissue by applying laser radiation;
• the control device acting to activate the laser device for emitting the laser radiation into the cornea in such a way that a lenticular volume is isolated in the cornea, the removal of the lenticular volume from the cornea effecting a desired refractive correction;
• wherein the control device predefines the lenticular volume during activation of the laser device such that the lenticular volume has a minimum thickness in the range of from 5 to 50 μm, the minimum thickness being at the edge of the volume in correction of myopia and in the region of the axis of vision in correction of hyperopia.