To recap from earlier this week, there are two ways you can upgrade your laser eye treatment: (1) upgrading on the quality of the final vision (you will see better afterwards) and (2) improving the safety and accuracy of the laser eye surgery. These are upgrades on what used to be the best treatment only a few years ago, which is known as non-wavefront LASIK and using a blade device to cut a thin flap in the surface of the cornea (the clear window at the front of the eye).

Upgrading on (1) involves paying for what is called ‘wavefront‘ laser eye surgery over ‘non-wavefront’.

Upgrading on (2) means getting rid of a metal razor-type blade in favour of a laser for the first part of the LASIK treatment (lots of names here… blade-free, dual laser, femtosecond, Intralase, Ziemer, Z-LASIK).

Kay’s questions have been about: is it really worth it to pay more? The short answer is that, yes, you should always look for ‘wavefront’ laser eye treatment. But why?

Well, the reason for this is not as obvious as laser eye clinics may tell you!

Wavefront refers to a technology adapted from astronomy which allows better resolution and clarity when looking at images of space. The principle is to remove tiny imperfections of focus, rays of light that are not getting focused properly and which cause blurriness, glare or hide details. Let’s look at an example from astronomy. In this image you can see how a blurry image of a star was improved though wavefront technology to reveal in fact two stars, known as a ‘binary star’.

'Wavefront' laser eye surgery can improve quality of vision

These imperfections of focus (known usually as aberrations) are not corrected by glasses. They are still there even after putting on your glasses or contact lenses. So after correcting your prescription fully and getting clear vision, you can still have imperfections in your vision which are usually more obvious at night.

Check back tomorrow for the next installment and the full answer on whether it is worth it to pay more  in order to get the best vision results (at most clinics – not mine, I add, FOCUS Laser Vision! – we don’t charge extra for you to get wavefront correction! In fact we charge less for wavefront surgery than other clinics do for their non-wavefront treatments).

See you tomorrow!

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