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Orthokeratology (Ortho-K)

Why have we been fitting ortho-K since 2003?…

The bottom line!

“If we have the opportunity and the chance to slow down or stop the progression of myopia we will present ortho-k as an option.  Everyone has their own myopia progression risk profile and we will assess this and explore the options available to us.

Why do we care how short sighted our patients become? 

Purely from a pathology perspective high myopia carries with it increased risks of glaucoma, cataract, retinal detachment and associated myopic retinopathies.  Then there’s the functional and social aspects to consider! 

Our view is that it is our duty of care to present ortho-k to our progressive myopic population as should every eye care practitioner.” 

Myopia prevalence is increasing rapidly around the world. East Asia is the most affected region, but rapidly rising rates of myopia can be found throughout the developed world. Research in animal models has shown that axial elongation can be triggered by hyperopic blur in the peripheral retina. The explosion of near-vision tasks to which children have been subjected in developed countries is thought to be behind the rising rates of myopia. Both drugs (atropine) and overnight orthokeratology have been shown effective in slowing myopia progression in children. Among the demonstrated safety and efficacy, there are many good reasons for optometrists and ophthalmologists to consider adopting orthokeratology in their practices.

This treatment is the forefront of myopia control decreasing the rate of progression of shortsightedness by typically 25-75%. This is one of the treatment options in our practice for combating the sweeping prevalence of myopia effecting our kids today.

To put it simply…

Overnight these lenses gently change the shape of your eyes using your tears so that in the morning you can see clearly when the lenses are removed. We have hundreds of patients wearing OK lenses ranging in age from 5 to 60 but what is it? Orthokeratology (Ortho-K /Corneal Reshaping Therapy/CRT) is a method of wearing custom rigid (hard) contact lenses, whereby you only wear these lenses to bed.

If you would like to know more please ask or make an appointment. We have highly experienced optometrists and contact lens specialists on hand to give you a well educated and sought after opinion.

For evidence based medicine on Ortho-K see our Latest Eye Treatments Page  and the links at the bottom of this page.

We will work with you and monitor any progression with not only refraction but measure the axial length of the eye with a Zeiss IOL Master and OCT biometry.

In short, the factors for myopia progression appear to be: Genetics – Environment (near work volume, illumination and posture) – Sunlight / Outdoor activity – Diet.  So we can then work on the modifiable ones in conjunction with what we know about ortho-k and myopia progression.  For a really good time on the internet further searching should include the words “peripheral hyperopic defocus”.  That should help put you to sleep?  Our recommendation is to look at the links at the bottom of the page and have an educated opinion and if you agree with us and the scientific research that is available we will support you in your decision as best we can.

See our awesome blogs on myopia:

or the link:

The following clips are for cleaning your ortho-K RGP contact lenses.  The first one is for Biotrue Solutions and the second one is for Boston Solutions.

Cleaning your OK lenses with BIOTRUE solution

Cleaning your ortho-K lenses with BOSTON solutions

For external evidence based medicine and research behind orthokeratology:

Before we get excited about myopia prevention, myopia control and risk factors it may be useful to understand why myopia progresses:

For our downloadable pdf, click the link below: