Orthokeratology lenses fitted by our optometrists in Adelaide or Woodville are worn while you sleep, leaving you with clear vision during the day without the need for contact lenses or glasses.
“Ortho” refers to correction, such as in orthopaedics or orthodontics, and “kera” relates to the cornea, the front surface of the eye. Custom-designed orthokeratology contact lenses are worn overnight, reshaping the cornea so that vision is clear the next day without the need for optical aid. This process is completely reversible and aims to reduce or eliminate refractive error (short-sightedness, long-sightedness, presbyopia and astigmatism). It’s also an immensely powerful tool against the progression of short-sightedness in a process known as myopia control.1 The following diagram illustrates how ortho-K corrects myopia:
Ortho-K uses the tears underneath the lens to change the corneal shape, either flattening the centre and steepening the edge to correct short-sightedness or vice versa for long-sightedness.2 We can successfully fit ortho-K in children and adults with:
We custom-design our ortho-K lenses with cutting-edge software program EyeSpace by Innovatus Technology. This gives us the highest levels of accuracy for the greatest chance of success when fitting your lenses. Our bespoke designs can correct high astigmatism, presbyopia and post-LASIK (refractive surgery) with residual myopia or irregular treatment areas.
A well-fitting myopic ortho-K lens
Our optometrist Lachlan Hoy played a key role in forging EyeSpace, which is now used by contact lens practitioners across the world including Australia, the US, New Zealand and South Africa. EyeSpace customises each lens to your prescription and eye shape to a degree of accuracy smaller than one micron.
If you want to find out more about ortho-K for your eyes, please book an appointment with us.
Corneal topographies taken before myopic ortho-K treatment (left) and after (right). Exaggerated 3D representation. Central area inside the red-ring has been flattened, correcting the short-sightedness.