The purpose of this open, prospective study is to address the effectiveness and precision of the VICTUS™ Femtosecond Laser Platform-assisted astigmatic keratotomy after femtolaser-assisted cataract surgery.
Corneal astigmatism after cataract surgery represents a considerable obstacle in the visual rehabilitation of patients. Up-to-date astigmatic keratotomy represents a standardized and effective procedure that allows decreasing of naturally occurring and surgically induced astigmatism. The shape and architecture of the Arcuate Incisions are pre-calculated based on a particular chosen nomogram. The different parameters of the Arcuate Incisions as radius, opening and position angle and cutting depth can be achieved precisely by the laser technology. The laser-assisted Cataract surgery and the Arcuate Incisions are performed by means of a femtosecond laser (VICTUS™ FEMTOSECOND LASER PLATFORM®, Technolas Perfect Vision GmbH, Munich, Germany) which is in the presented study under investigation and is already CE-approved. For this open, prospective data collection several selection criteria have been defined in order to obtain a data set of minimal 43 eyes and maximal 50 eyes. Depending on whether they will be treated unilateral or bilateral the number of subjects enrolled within this study sums up to 22-50 patients. The data is gathered in the Castrop-Rauxel Augenklinik and only from one experienced surgeon.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
43
Augen- & Laserklinik Castrop-Rauxel GmbH
Castrop-Rauxel, Germany
subjective cylinder
At the 3 month visit the subjective cylinder as measured with phoropter or trial frame is ≤ 0.75 D in 60% of the eyes.
Time frame: 3 month postoperative
topographic corneal cylinder
At the 3 month visit the value of postoperative corneal astigmatism of the central 3 mm zone, measured with topography, is ≤ 1.0 D in 60% of the eyes
Time frame: 3 month postoperative
abberrometric corneal astigmatism
At the 3 month visit the value of postoperative corneal astigmatism of the central 3 mm zone, measured with aberrometry, is ≤ 1.0 D in 60% of the eyes.
Time frame: 3 month postoperative
keratomic corneal astigmatism
At the 3 month visit the value of postoperative corneal astigmatism of the central 3 mm zone, measured with keratometry, is ≤ 1.0 D in 60% of the eyes
Time frame: 3 month postoperative
correction index based on keratometric corneal astigmatism
At 3 month visit the value of the correction index based on preoperative and postoperative keratometric corneal astigmatism is 0.9+- 0,35 in 70% of the eyes.
Time frame: 3 month postoperative
correction index based on
At 3 month visit the value of the correction index based on preoperative keratometric corneal astigmatism and postoperative subjective astigmatism is 0.9+- 0,35 in 70% of the eyes.
Time frame: 3 month postoperative
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