What is Standard Lasik vs. Customized Lasik?

Either of these excimer laser treatments can be used after the creation of the flap.

Standard LASIK technology has been used for decades, having first been developed at the end of the 20th century. Standard lasik corrects an average curvature over the eye.

Vision science has shown that each eye has its unique optical irregularities, just like a fingerprint. ‘Customized’ Lasik allows us to reduce or eliminate these irregularities point by point, creating a very smooth surface with a better chance of high definition vision. ‘Customized Lasik’ will often lead to vision that is better than 20/20. Also, its very wide treatment zone results in high quality night vision, eliminating halos and other unwanted aberrations.

lsv alcon

The development of the Alcon WaveLight Allegretto EX500 was a ground-breaking moment in laser vision correction. It was the first excimer laser to be used in wavefront-guided treatments, which can measure aspects of a patient’s refractive error that cannot be detected during traditional scans, thus allowing for better visual results.



The laser comes with a variety of advanced features, including:

  • Quick Speed: the laser delivers 200 individual pulses per second, thus reducing the risk of any rare, adverse outcomes.
  • Beam Size: with a diameter of only 0.68mm, the small beam features a Gaussian profile for smoother ablation.
  • A 500Hz Eye Tracker: this enables the laser to track the eye’s movements with only 2 milliseconds of latency, which allows for an increased speed of over 1.4 seconds per diopter
  • Optical Zones: the laser features a combination of optical zones ranging from 1.5 mm to 8 mm, which reduces night vision problems in patients post-surgery.

The Alcon WaveLight Allegretto makes it possible to treat a larger area of the cornea compared to other types of lasers. Coupled with the aforementioned features, the laser allows the surgeon to create a more natural cornea shape, which results in a higher quality of vision. Specifically, the Alcon WaveLight Allegretto is known to reduce or eliminate glare and halos while driving at night and offers better visual results in low-light conditions.


At Laservue, 99, 7 % of our patients achieve vision of 20/20 or better after "HD - TopoZero" LASIK

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