If you are having LASIK, please read the other pages in this section carefully - they are reached from the blue link buttons on the left. The following are results graphs for my last few months results. All are taken at 3 months post op. I have also scanned in a recent article (April 2010) about this laser from an ophthalmic magazine called Ocular Surgery News

Accuracy Levels: The middle line is spot on and the dotted lines are +/- 1 Dioptre. We have only had the laser for a few months and these are our first results. As you can see, this is a very accurate and safe laser, Both LASIK and LASEK results are in the myopia charts.

Another Accuracy Graph: Driving standard is about -0.75 Dioptres. A patient who gets even one eye

within half a Dioptre is usually very pleased.

Astigmatism Results:

Safety for treating myopia (short sight): "

"No harm" is no loss of Best Corrected Spectacle Visual Acuity (BCSVA).

One line loss is usually not noted by the patient

line loss as a measure of safety.  The chart plots how many lines gained or lost on the standard Snellen vision chart.

Most stay the same. Of those who gain sharpness of vision, a lot do so because of magnification effects;

glasses make the object size smaller, whereas contact lenses and Lasik do not. Our charts use the 

continental spacing of 1.2,  1.0,  0.8,  0.63,  0.5 which corresponds to the British

6/5,  6/6,  6/7.5,  6/10 and  6/12.  If the patient could see 1.0 prior to surgery and after it could only

see 0.8, then this would count as loss of one line of best corrected spectacle vision.

Results are normally at 3 months as the vision can be improving up to then. Hence these are early and incomplete results, with only 2 eyes at 3 months

Defocus Equivalent: A technical graph of accuracy made by the numerical addition of the sphere and half the cylinder without taking into account the sign. ( +1 / -2 x 180 has a spherical equivalent of 0 but a defocus equivalent of 2). It is a truer measure of accuracy than the spherical equivalent used in other graphs. (sphere + half the cyl taking into account the sign). Here are some results that I did using the Technolas laser in 2003: I do not yet have a proper table for the Wavelight laser (2010).

Results for hyperopia (long sight): Wavelight Laser:

Bar chart: 

Hyperopia takes longer to stabilise than myopia. We only have 2 eyes at 3 months so far. There is often an initial myopic shift in treating hyperopia.

In hyperopia, the image size is bigger with glasses and smaller with contact lenses or Lasik/PRK.

Hence there is a tendency, opposite to myopia, to lose sharpness of vision with contact lenses

or Lasik because of the image size difference.

The average age of people presenting for hyperopic lasik is around 46y, whereas the average age for 

myopia is 33y. This is because the hyperopes can manage until middle age until their

fails. There is nothing worse than a middle aged hyperope as they can see neither distance or near.

Correspondingly, they are often amongst the happiest patients following refractive surgery.