Laser in-situ Keratomileusis (LASIK)

To be independent of glasses or contact lenses is a privilege many people do not have. It is however possible to be able to function without these commodities by considering LASIK. This new technology will be explained to you, in detail, by Dr. Benade and his professional staff once you make your appointment for a consultation.

Refractive Laser Surgery

Refractive surgery means that a surgical procedure to the eye replaces the use of spectacles and contact lenses.

What is EXCIMER Laser
IBM developed this laser in 1979 and by means of this computer controlled laser beam specific volumes and areas of corneal tissue can be vaporized. This changes the front surface of the cornea to your specific refractive error. Because of the specific wavelength of the Excimer Laser beam (0.2 -0.4 micrometer) no damage is done to surrounding tissues.

The laser medium is a gas and excitation occurs via pulsed electrical current in a sealed tube. Tissue destruction is believed to occur as a result of a photochemical process whereby chemical bonds of organic compounds in the tissue are broken.

Who qualifies for excimer?
To determine this you need to be seen by Dr. Benade. Factors such as age, refractive error, thickness of your cornea, topography of your cornea etc. must all be taken into consideration.

To be able to undergo excimer laser surgery:


What is Myopia?
Myopia (short sightedness) means a person can see close-up without any form of correction but not at a distance. Light rays entering into the eye are focussed in front of the retina. By flattening the surface curvature of the cornea the focal point is moved to the back of the eye onto the retina. This is done by the LASIK procedure using the excimer laser.

What is Astigmatism?
In this condition the curvature of the cornea is not equal in all axis of refraction. In simple astigmatism you have a flat axis in either the horisontal, vertical or an oblique meridian and a steep axis 90 degrees there-on. This can also be treated using the excimer laser, to produce a clear image.

What is Hyperopia?
This condition is also called farsightedness. This means that the light rays entering the eye are not bent or refracted enough to focus on the retina. Light focuses behind the retina and these people struggle to see far or near without correction. This can also be treated by excimer laser.

By having an excimer laser procedure performed on your eyes, you can have functional (not always 20/20) vision in 3 manoeuvers:

  1. cutting flap.
  2. vaporization of the corneal tissue.
  3. replacing flap.

Complications and Side effects
There are very few complications and side effects to the excimer laser surgery.

Once Dr. Benade and his staff have seen you, you will receive all the necessary information regarding this procedure.

Most common questions and answers.

  1. Is it painful ?
    No, the procedure is done under local anaesthetic and mild sedation.
  2. How long does it take?
    To perform a LASIK on both eyes can take anything from 20-30 minutes.
  3. Are my eyes patched and for how long ?
    Patched with eye shields for the day of the procedure, you will be seen the following morning and from then on your eyes are open.
  4. Am I restricted in any ways?
    No, except for the day of the procedure. After that you can carry on as normal although you are: