Shanghai East Hospital
Renji Hospital
medical travel
Tumor Therapy China


If you are considering intraLASIK in China and would like to get know more information about intraLASIK, please complete the inquiry form or email us at


What is IntraLASIK?

During traditional LASIK surgery, the surgeon first creates a flap in the cornea with a microkeratome blade, and then reshapes the cornea in a way that improves the patient’s vision. IntraLASIK is an innovative new method in which the surgeon programs the desired depth and position of the corneal flap into a computer system prior to actual surgery, making the creation of the flap an incredibly safe and accurate procedure.

How IntraLASIK works ?

IntraLASIK alters the shape of the cornea to correct the eye’s focusing power. The way the cornea is reshaped depends on the condition of the eye.

Surgeons create an ultra-thin corneal flap (usually 90 to 100 microns or 0.1-mm thick) using a femtosecond laser. The laser creates this flap by producing thousands of miniature (1 micron or 1/1000th of a millimetre) bubbles in the cornea with micro-accuracy. The bubbles expand join together to separate a layer of the cornea, which becomes the flap. Then a second set of bubbles creates the side of the flap, leaving a gap at the top to act as a hinge.

The excimer laser (Bausch & Lomb Z100) is used to reshape the cornea depending on how the focusing power of the eye needs to change. The flap is replaced and allowed to settle without stitches, and because the eye is fooled into thinking that no surgical procedure has occurred, visual recovery is extremely quick.


The cornea in short-sighted patients is flattened once the flap has been created and lifted. Our excimer laser changes the shape using one of several algorithms: Zyoptix Tissue Saving, Zyoptix Wavefront or Zyoptix Aspheric.

The suitability of each will depend on a thorough examination of your eyes. Your Centre for Sight consultant will advise on which is most suitable for you. This will be based on a number of factors including a very thorough eye examination.

Far-sightedness or Long-sightedness

The cornea in long-sighted patients is steepened by removing tissue from the periphery of the cornea. This is done using Zyoptix Wavefront, a highly personalised treatment which suits patients with higher levels of long-sightedness, including astigmatism, and those who have large pupils and problems with night vision.


Astigmatism IntraLASIK results are highly predictable, especially when using Iris Recognition and Registration technology . Our Advanced Control Eye Tracker (ACE), UK’s first installation has improved accuracy further and we have treated extremely high astigmatism (7 to 8 D using Zyoptix Wavefront combined with ACE... To accurately treat astigmatism, it is vital that treatment is delivered at a precise angle, and if the eye is rotated by even a few degrees, the amount of correction can be reduced significantly.


After the age of 40, the crystalline lens in our eye that enables us to focus and read becomes larger, harder and less adaptable. This can make reading small print difficult, especially in dimly lit rooms. When this happens, most people head to the pharmacy or their optician to buy a pair of reading glasses.

An alternative option and suitable for those in their 50s or older are Intraocular lens implants, either the ACCOMMODATIVE Crystalens or Multifocal, Acri.LISA, ReSTOR or Tecnis Multifocal.

IntraLASIK Risks and Benefits

As with any surgical procedure, IntraLASIK has both risks and benefits that should be discussed fully with your LASIK surgeon. Generally, the IntraLASIKprocedure takes more time than with the traditional microkeratome blade, about 15-20 seconds per eye, compared to about three seconds per eye. Your eyes may be red for a few days, and your visual recovery can be slower than with the microkeratome.

The benefits of bladeless LASIK are that the flap thickness and diameter are pre-programmed into the IntraLASIK software by your surgeon, and are therefore very predictable. This greater accuracy and control is especially beneficial to those patients with particularly thin corneas. The IntraLase® laser also has the lowest occurrence of flap complications, such as partial flap, buttonhole flap, or wrinkling.

IntraLASIK Statistics

The IntraLase® laser was approved by the FDA in 2001 and has since been used to treat more than 250,000 eyes. Studies show that 81 percent of patients choose bladeless LASIK over traditional LASIK with a microkeratome when given the choice. Many doctors feel IntraLASIK is the best choice for treatment in certain cases.

If you are considering intraLASIK in China and would like to get know more information about intraLASIK, please complete the inquiry form or email us at