NAVEX - THE LASER SYSTEM

Component of Nidek NAVEX EC 5000 CX IIIExcimer  Laser  System :

Optical Path Different System (OPD Scan Wavefront Plus) is the instrument used to measure optical aberrations of different kinds of eyes and the causes of impaired vision.

(1) Wavefront analyzer is the highest order optical aberration measurement device.
(2) Optical Path Difference scanning system is the system that checks 1,440 different spots of your cornea, then analyzes and calculates the results to ensure accuracy.
(3) Auto Refractometer is used to measure the refraction of the eyes.
(4) Corneal topography is used to check the curvature of your cornea. It is very fine instrument that check 6,400 spots of corneal curvature that could not be detected by any other machine.
(5) Measures both Total and Higher Order Aberration.
(6) Auto keratometry
(7) Pupil diameter
(8) Fixation Offset

Final Fit Software	OPD Scan

Final Fit Software is a program that calculates and designs the pattern of the laser for NAVEX excimer by generating the data from OPD Scan Wavefront Plus.

NAVEX using a multi-dimensional beam delivery tracking system and pre-calculated data from Final Fit Software, follows the movement of the eye to ensure a precise and accurate cut. Although the eye of the patient does not remain still, the machine tracks for the proper position with help of Torsion Error Detector (TED) and performs accordingly. It gives aspheric custom ablation.

Microkeratome :

The Microkeratome is an essential tool in LASIK surgery. It plays a major role in the process. The success of LASIK depends on the microkeratome. The innovative technology nowadays makes the microkeratome very safe to use and creates a smooth surface cut. The microkeratome is very delicate and needs a keen hand and eye to operate. we uses the Moria M2 microkeratome, the latest technology from France, and also MORIA M2, the only and latest technology of the microkeratome that is best suited for the Asian eye.

MORIAM2 runs on two separate motors. The first motor controls the frequency of oscillation of the blade running at the high frequency of 18,000times/minute and the second motor controls the stability of moving forward, producing a smoother surface.

NAVEX with MORIAM2 helps save up to 40% of the corneal tissue by using small spot segmental ablation and slit scanning. The process is smoother and less time consuming than any other machine used in the LASIK market right now.

Automatic eye tracking :

To achieve the most accurate positioning of the laser during treatment, the latest generation of lasers incorporates an automatic eye tracking facility. Utilizing this feature, the laser observes minute movements of the patient’s pupil and instantly responds to them by moving the laser beam accordingly. This enables the most accurate positioning of the treatment area, directly over the center of the pupil, and ensures that the laser ceases whenever the patient’s eye moves out of position.

The CCD Camera follows the eye position via the pupil without having to diliate the pupil. The other special aspect is that there are absolutely no side effects of the instrument into or out of operating field. The eye tracker uses two infrared rays passively and actively without pretracking or post imaging. The eye tracker can choose the center of the tracking. And it is FDA approved.

How is NAVEX different?

LASIK is for the correction of lower order aberration, but NAVEX works to eliminate higher order aberration problems resulting in complete vision correction.

NAVEX can lead to :
(1) Superior vision
(2) Clear vision without glasses or contact lens
(3) A decreased risk of glare or halo effect
(4) Increase a chance of correction high range refractive errors.