The concept

Accelerated orthokeratology or Corneal Modelling Correction is a reversible and non-invasive technique that compensates for optical defects using lenses worn at night to achieve clear, uncorrected vision during the day.

In recent years, this technique has benefited from considerable innovations, both in terms of the lens designs and in terms of the materials. It is considered an effective solution for slowing the progression of myopia, among other things.

What’s special about Ortho K

Correction of myopia and slowing of its progression

For children and adolescents:

- Controls the progression of myopia
- Lenses are worn in a controlled and safe environment (the home)
- The wearer can take part in any kind of sporting activity with total freedom

For adults:

- New-found freedom and natural vision
- Superior wearing comfort compared to day-wear lenses
- No dry eyes
- Improves depth of field

Testing for progression of myopia

In order to quickly evaluate the risk of myopia progression in a child, check your answers online and obtain the result:

Family history:
Do either of child’s parents have myopia?
Yes, both
Only one
No, neither
Age of onset of the child’s myopia
Before the age of 8 or between 8 and 13
Between the ages of 1 and 16
After the age of 16
Progression of child’s myopia
What has been the annual progression of the child’s myopia?
More than 1 D
Between 1 and 0.50 D
Less than 0.50 D
Does the child (or young person) take part in
outdoor activities?
Less than 1 hour 30 minutes per day
Between 1 hour 30 minutes and 3 hours per day
More than 3 hours per day
How much time is spent on near vision activities (or in front of a screen: tablet, phone, computer, television etc.) outside of school:
Less than 1 hour 30 minutes per day
Between 1 hour 30 minutes and 3 hours per day
More than 3 hours per day

Indications and contra-indications

Optical indications:

Indications and contra-indications in children and adolescents:

- Young people with myopia, progressive myopia
- Sporting activities (especially nautical and aquatic activities)
- Lack of hygiene
- Lack of engagement on the part of any of the parties involved (one of the parents or the child)
- Irregular sleep cycles
- Ocular pathology, systemic illness

Indications and contra-indications for adults:

- Sporting activities
- Prolonged use of screens
- Dissatisfied soft contact lens wearers
- Dry eyes (apart from dry eye syndrome)
- Contra-indication for refractive surgery
- Profession that requires good visual acuity without correction
- Pupil diameter > 4mm
- Ocular pathology, systemic illness
- Irregular sleeping pattern
- Number of hours of sleep < 6 hours - Lack of hygiene - Internal astigmatism

Selecting wearers and informing them

The selection of wearers is one of the key factors of treatment success:

It is also important to inform the wearer about: