EyeSTAR LASIK Institute in Istanbul
EyeSTAR LASIK Institute in Istanbul
WaveLight EX500 Excimer Laser
At EyeSTAR LASIK Institute, we use the WaveLight EX500 Excimer Laser, one of the most advanced and reliable systems in the world of refractive surgery. Built on the trusted WaveLight platform, this laser operates at an incredible 500 Hz, meaning it checks and rechecks the position of your eye 500 times per second during treatment. This level of precision ensures that each laser pulse is perfectly placed—even if your eye moves slightly.
What does that mean for you? Faster, safer procedures with pinpoint accuracy. The average treatment time is just 1.4 seconds per diopter, which means less time under the laser and a smoother experience overall. The system’s swivel bed design also minimizes the time between flap creation and laser treatment, which helps maintain corneal hydration and improves outcomes.
Combined with our expert surgeons and detailed diagnostic technology, this laser helps us deliver outstanding results—even for complex prescriptions.
EyeSTAR LASIK Technology
At EyeSTAR LASIK Institute, we use the FEMTO LDV Z6 femtosecond laser—an exceptional innovation in laser eye surgery that allows us to perform LASIK with even greater precision, safety, and comfort. Unlike older femtosecond lasers, the Z6 uses ultra-fast, low-energy light pulses to create the corneal flap—the crucial first step of LASIK.
What sets the FEMTO LDV Z6 apart is its gentle yet incredibly fast approach. It delivers pulses at a rate of 5 million per second, using less than 10% of the energy of conventional femtosecond lasers. This results in a safer, more comfortable experience and supports faster visual recovery.
Here’s why patients love the FEMTO LDV Z6:
- Enhanced Safety
Lower energy means less discomfort, reduced inflammation, and decreased light sensitivity after surgery. - Greater Precision
The Z6 allows our surgeons to create highly accurate corneal flaps—especially important for patients with high prescriptions or thinner corneas. - Shorter Procedure Time
Its rapid pulse delivery shortens surgery time significantly, making the experience smoother and more comfortable. - Faster Visual Recovery
Thanks to its overlapping bubble pattern, the treatment surface is exceptionally smooth—leading to quicker healing and clearer vision in a shorter time. - Lower Risk of Dry Eye
The Z6’s gentle energy delivery reduces disturbance to the eye's surface, lowering the chance of post-surgery dry eye symptoms.
At EyeSTAR, we’re proud to pair this cutting-edge technology with our personalized care, ensuring the safest and most effective outcomes for every patient.
- Enhanced Safety
Additionally technology
Assessment methods include corneal tomography, ultra-precise corneal topography (measuring the cornea at 22,000 points), corneal wavefront, and diagnosis and classification of corneal shape abnormalities with an artificial intelligence system.
The WaveLight Allegretto Wave Eyetracker
The EyeSTAR eyetracker is an integral part of EyeSTAR LASIK treatment. It works with the laser for an ultra-precise treatment, ensuring that each laser pulse is placed exactly where it should be.
EyeSTAR's eyetracker has a sampling rate faster than 500Hz. and it follows eye movements 500 times per second. The reason this is important is because the eye can twitch at a rate of 60Hz. If your eye twitches faster or at the same speed as the eyetracker then the eyetracker may not be able to get the appropriate readings of the movement of the eye. In turn, the laser may not be able to place the right pulse of the laser in the appropriate section of the cornea because of the lack of information.
What is also extremely important is the ability of the laser to react to the information being sent to it from the eyetracker. The response time of the laser must be very fast to ensure that each laser pulse is placed exactly on the appropriate part of the cornea. Even if the laser can sample the movement of the eye 1000 times but the laser reacts slowly to this information, the result is that the laser may be placing pulses on areas of the cornea based on old information.The best example of the relationship between the eyetracker and the laser is to try and imagine throwing a ball at a moving object that is going 500 miles an hour. Although you can see the moving object, your reflexes are too slow to adjust to the constant changes of the moving object. As a result, every time you throw the ball you are missing the moving object. The EyeSTAR laser and eyetracker both work at 500Hz, which means that as the eyetracker is following the eye 500 times per second, the laser is working at the same speed, by precisely ablating the necessary areas of the cornea.
The WaveLight Allegro Topolyzer
The basis for successful eye laser treatment is an accurate diagnosis. Working with the EyeSTAR ALLEGRO Topolyzer means utilizing an ideal device to support the decision-making process for customized laser vision correction.
By determining the patient’s exact visual correction needs, it greatly enhances the range of possible treatments, from Wavefront Optimized to the highly sophisticated topography guided treatment (T-CAT).
The ALLEGRO Topolyzer with its corresponding T-CAT software has been specifically designed to measure and generate high resolution treatment data for eyes with severe irregularities. It was developed for the most difficult cases, in which standard wavefront measurement and treatment would prove clinically ineffective.
With an extraordinarily high resolution of the cornea resulting from 22,000 measuring points and a large placido disc, the ALLEGRO Topolyzer is an accurate tool for the preparation of refractive surgery. In addition to producing a refractive map to display the influence of aberrations, the ALLEGRO Topolyzer is fitted with an interactive elevation map, allowing the individual selection of reference body, radius and sphericity.The WaveLight Allegro T-CAT Treatment
The ALLEGRO Topolyzer and T-CAT have been optimized to complete the range of customized laser vision correction and to interact in perfect synchronization with the ALLEGRETTO WAVE Eye-Q excimer laser systems. All necessary treatment and patient parameters are transferred from the ALLEGRO Topolyzer to the laser. The ALLEGRO T-CAT software inside the laser´s notebook then calculates the appropriate correction pattern. The physician may, however, decide to change individual parameters at any stage of the process.
The integrated real keratometer and automatic measuring release allow for precise centration of the image. Digital image transmission and sub-pixel approximation combined with a comfortable working distance and a measuring time amounting to only a fraction of a second allow for the highest possible reproduceability and accuracy of the data recorded. All data obtained here will be used by the ALLEGRO T-CAT software to define the respective treatment parameters.The ALLEGRO Topolyzer may also be used as a stand-alone diagnostic instrument for regular topography measurements which are always required in refractive surgery. Integrated in the device is a keratoconus detection software and optional pupillometry software is also available.
Applications for the ALLEGRO Topolyzer include:
- Repair station for decentered/irregular ablations after previous refractive surgery
- Enlarging small optical zones
- Keratoconus screening
- Treatment of high astigmatism
- Treatment of other surgically induced corneal irregularities
The WaveLight Allegro Analyzer
The EyeSTAR ALLEGRO Analyzer is an ideal diagnostic device to support the decision-making process for customized laser vision correction. It greatly 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 deliver wavefront data needed to perform safe and successful wavefront guided laser vision correction. All components have been optimized to work in concert with the ALLEGRETTO WAVE Eye-Q laser.
All necessary treatment and patient parameters are transferred from the ALLEGRO Analyzer to the ALLEGRETTO WAVE Eye-Q laser. The ALLEGRO A-CAT software inside the laser notebook computer then calculates the appropriate correction pattern. ALLEGRO A-CAT (or wavefront guided) treatments are intended for use on patients with high incidence of high-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.Tscherning Principle
Working in the visible spectrum, the ALLEGRO Analyzer is designed to make wavefront measurements by utilizing the Tscherning operating principle, which works as the same principle as the human eye. In order to perform a measurement according to this principle, an image of the measurement spots is projected onto the retina. This allows the physician to constantly verify that the image has been taken properly and that all measurement spots are actually valid. The application of this measurement principle allows for the detection of inaccurate readings caused by local obstructions.The application of this principle allows the ALLEGRO Analyzer to exclusively deliver valid data and minimizes the risk of false treatment. The ALLEGRO Analyzer utilizes visible light to perform the measurements, therefore additional off-line calculations and factoring for chromatic errors are not required.
Automatic measurement release ensures that only centered measurements will be taken into account. Minor decentrations are detected and registered along with the pupil diameter and other relevant values. These data are then added to the actual wavefront data. Proprietary WaveLight data processing software allows for the registration and recording of valid measurements even with serious eye conditions.
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