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  ALLEGRO Analyzer
 
The successful treatment of vision disorders requires an accurate diagnosis. Being the first company worldwide to perform wavefront-guided treatments on the human eye, WaveLight has gathered a vast experience in clinical application, which is notedly reflected in the excellent quality of its range of products.
The ALLEGRO Analyzer is an ideal diagnostic device to support the decision-making process for customized laser vision correction. It remarkably enhances the range of possible treatments, from the standard (wavefront-optimized) procedure to the highly sophisticated wavefront-guided treatment.
 
ALLEGRO A-CAT Treatment
 
The ALLEGRO Analyzer has been specifically designed to process wavefront data which are needed to perform a safe and successful wavefront-guided laser vision correction. All elements such as its user interface or its resolution and algorithms were optimized to work in concert with the ALLEGRETTO WAVE laser systems.

All necessary treatment and patient parameters are transferred from the ALLEGRO Analyzer to the ALLEGRETTO WAVE laser systems. The ALLEGRO A-CAT software inside the laser notebook computer then calculates the appropriate correction pattern. The physician can now decide on the adaption of individual parameters at any stage of the operation.
ALLEGRO A-CAT (or wavefront-guided) treatments are intended for use on patients with a high incidence of higher-order aberrations in their optical system. Any required correction to the optical path of the eye is then enabled via A-CAT module on the Cornea.
The Tscherning Principle
 
Operating in the visible spectrum, the ALLEGRO Analyzer is designed to perform wavefront measurements following the Tscherning operating principle,which works in analogy to the human eye.

In order to perform a measurement following this principle, a spot pattern is projected onto the Retina. This allows the physician to constantly verify that the pattern had properly been sized and that all measurement spots are still valid. This method is a secure way to avoid invalid measurement, caused by local obstructions in the patient's optical system.
The application of this principle allows the ALLEGRO Analyzer to exclusively process valid data and minimizes the risk of false treatment.
For the ALLEGRO Analyzer uses visible light to perform the measurements, additional off-line calculations and factoring of chromatic errors are not required. The risk of unnecessary inaccuracies is minimized adequately.
An automatic triggering function ensures that only centered measurements will be taken. Minor decentrations, the diameter of the Pupil and other relevant values are detected and recorded. These data are then added to the wavefront data measured.
Proprietary WaveLight data processing software is used for the transmission and recording of valid measurement data even under adverse conditions.
 
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