What is Orthokeratology (Ortho-K)?
Orthokeratology or Ortho-K is a non-surgical procedure that eliminates the need for glasses or contact lenses during the day. With Ortho-K you wear specially designed lenses at night while sleeping. These lenses gently change the shape of your eye so that you can see clearly, with your natural vision, during the day.
This safe and effective technique is mainly used to correct shortsightedness (myopia), long sightedness (hyperopia), astigmatism and presbyopia (blurred near vision). It is an alternative to laser eye surgery (LASIK/LASEK/PRK) for those who don’t want surgery.
How does Orthokeratology work?
A refractive error occurs when images do not fall properly on the back of the eye (retina). Refractive errors are usually corrected by using spectacles or contact lenses.
With Ortho-K we refocus images by changing the shape of the front surface of the eye in the same way laser eye surgery works. The back surface of the lens has a number of specialised curves that move the tears which reshape the front surface of your eye while you sleep. The result after waking and removing your lenses is clear, sharp vision.
What is the process?
To make an Ortho-K lens we first map the surface of your eye, using an instrument known as a corneal topographer. At Optomeyes Eyewear we have a corneal topographer on site. After completing the map and a comprehensive eye test, we will then have all the necessary information to create a custom lens for your eye.
Is Ortho-K safe?
Ortho-K is a safe and reversible procedure. The Ortho-K lenses we use are approved by the TGA (Therapeutic Goods Administration).
These lenses are made of materials that have high oxygen permeability that allow your eyes to breathe overnight while you sleep which maintains eye health. This material is different from contact lenses you would normally wear during the day.
All contact lens usage carry a small risk of eye infections. This is also true true for Ortho-K. The risk of infection can be greatly reduced by following your cleaning and lens care instructions meticulously and only wearing the Ortho-K lenses as prescribed and attending all the necessary follow up visits.
Who is suitable for Ortho-K?
The following people may be good candidates for Ortho-K:
Those unable to wear contact lenses due to allergies and dry eye
Active people who do not want the inconvenience of glasses or contact lenses when participating in sports
Those interested in laser eye surgery but don't want to undergo surgery
Children whose myopia (shortsightedness) is getting progressively worse
Those with myopia
Those with hyperopia
Those who have presbyopia
What is Myopia Control?
The number of children who are becoming myopic has grown rapidly over the last 25 years. The Center For Disease Control in the United States has estimated that by 2020 50% of the world’s population will have myopia. The results also indicates that Ortho-K has been proven to be an effective option for controlling myopia progression.
Myopia control is important because the higher the degree of myopia the greater the risk of sight threatening conditions such as retinal detachment or glaucoma.
The younger a child is when they first exhibit myopia the more likely that they will progress to high levels of myopia.