The ELZA Institute has a global reputation for fixing laser surgery complications. Prof. Hafezi, the Medical Director of the ELZA Institute, has nearly 20 years of experience in laser refractive surgery, and this experience is a key reason why patients are referred from all over the world to ELZA to have failed refractive surgeries repaired by us.
Here are some examples of ELZA fixing complications after laser surgery:
Repairing a decentred ablation.
The “before” image on the left is from an old PRK for myopia from the early 2000s, but unfortunately, the laser ablation was de-centered, and this has left the center of the cornea “multifocal” – meaning that the patient has blurred vision, especially at night, when the pupil is large.
The “after” image is after correction at ELZA with a wavefront-guided transPRK. We have been able to give the patient a big, homogenous optical zone, and this gives the patient a distinct improvement in visual quality and visual acuity, in both light and dark conditions.
Thanks to limitations of early excimer lasers, refractive surgeries performed in the early 2000s (like the case presented below) had small optical zones – in other words, the region in the centre of the cornea that was corrected was relatively small. This meant that during daytime, when there is lots of light, the patient’s pupil is small, and the patient sees well. But at night, when the pupil is large, the light starts to come through the uncorrected parts of the cornea, which is “multifocal”, and the patient’s vision gets considerably worse.
At the ELZA Institute, we were able to correct this LASIK complication using a wavefront-guided transPRK to expand the optical zone size to a much larger one, meaning that the patient could see well in both light and dark conditions.