Z8 OCT-controlled 2D vs 3D LASIK

Inclusion Criteria: Key inclusion criteria as described by the German Commission for Refractive Surgery (KRC) are: * The recommended range of application for the correction of myopia is up to -8.00 D and for the correction of astigmatism up to 5.00 D. * The limited for LASIK correction of myopia is up to -10.00 D and correction of astigmatism up to 6.00 D. If myopic astigmatism is to be corrected, the values for myopia and astigmatism must be added together. * The recommended range for correction of hyperopia is up to 3.00 D. Up to 4.00 D is the range of limited application for hyperopia. * Age ≥18 years with stable eyesight for over 12 months. Exclusion Criteria: Key exclusion criteria as described by the German Commission for Refractive Surgery (KRC): * preoperative corneal thickness less than 480 μm * predicted stromal thickness under the flap after ablation of less than 250 μm * chronic progressive corneal disease and forme fruste keratoconus * surgery before the age of 18 years * symptomatic cataract * Glaucoma with a marked loss of visual field * Exudative macular degeneration. * Concurrent participation in another ophthalmological clinical study Exclusion criteria irrespective of the KRC criteria: * Undergone former eye surgery * Contact lens wear within the two weeks prior to commencement of preoperative measurements