You can correct your vision while you sleep
The prevalence of myopia (shortsightedness) is progressing faster than predicted and the latest research indicates that myopia will increase sevenfold by 2050.
Onset is due to a combination of nature and nurture. In the case of nurture, it has been demonstrated that if one or both parents are myopic, there is a statistically higher probability that the child will also develop myopia. However, it is nature – ie environmental factors as a result of the changing nature of your lifestyles – that has primarily been held responsible for increasing rates of myopia. This has been identified as resulting from a combination of decreased time outdoor, and increased near work activities e.g. mobile phones, tablets and computer use. Ortho-K has been perceived as the most effective method of myopia control.
What is Orthokeratology? Orthokeratology (Ortho-K for short) is an exciting new treatment of vision correction that eliminates the need to wear contact lenses or spectacles to see clearly during the day. Ortho-K vision correction works by gently reshaping the centre of the cornea overnight with specially designed contact lenses. Once the lenses are removed in the morning you will have clear vision without spectacles or contact lenses.
The Ortho-K vision correction process is completely reversible and has been shown to reduce the progression of short-sightedness in younger patients. Currently at Visique Naylor Palmer patients with low - moderate short-sightedness and low amounts of astigmatism are ideal candidates for Ortho-K vision correction.
Orthokeratology has reached a safe and predictable level made possible with the latest technological advancements in computerised manufacturing, and oxygen permeable contact lens materials that are available at Visique Naylor Palmer.
Are there age restrictions for Ortho-K? There is no age limit young or old, children. Ortho-K has been shown to reduce or half the progression of short-sightedness it is becoming a very exciting method of vision correction in teenagers and pre-teens.
How can Ortho-K vision correction slow my child’s shortsightedness (myopia) progressing? Research has shown that the progression of myopia (axial elongation or lengthening of the eye) is thought to be due to peripheral defocus caused by standard treatment with contact lens and spectacles. Although traditional lenses focus light precisely onto the central part of the retina to make vision clear, the design of these lenses focuses light behind the retina in the peripheral parts of the eye. This defocus acts as a stimulus for the eye to lengthen which causes an increase in myopia. Ortho-K correction, due to the nature of how the shape of the front surface of the eye is altered, is believed to prevent the peripheral light rays from being focused behind the retina, instead focusing light at or in front of the retina (as the diagram on the next page shows). This eliminates the stimulus for eyeball lengthening, thus preventing myopic progression.
How long does it take to reach good vision? Most patients have rapid improvement in the first few days of therapy. Generally 70% of the required correction is achieved after only the first nights wear. Optimum, stable vision will generally require up to 10-14 days of treatment. Some high prescriptions may not be able to be fully corrected with Ortho-K even with optimum lens design. If the goal of Ortho-K correction is myopia control then this is not a problem as this myopia-control effect will still be present if lowpowered spectacles are still worn during the day to ‘top-up’ the vision.
To learn more about Ortho-K book with one of our optometrists for a FREE Ortho-K screening assessment to discuss if Ortho-K is right for you. A full eye exam at Visique Naylor Palmer or Visique Eye Spy within the previous 12 months is necessary prior to starting Ortho-K, as several aspects of your eyes including health, vision and corneal shape will have to be assessed to establish if your eyes can have Ortho-K.
A full eye exam will reveal if eyes can take Ortho-K.