What topography data do I need to fit orthokeratology lenses?

Orthokeratology fitting to children is increasing in frequency worldwide, due to its volume of evidence for myopia control. Learn what data inputs are needed and how to best use your topographer for accurate ortho-k lens design.

How well does orthokeratology work over long periods of time?

This review investigated 18 years of practice data for the predictability, efficacy and safety of long-term ortho-k wear. The results showed that for at least one year’s wear, there was good efficacy and predictability of target refraction. Although corneal staining was common, serious adverse effects were found to be rare, particularly for children.

Is there a dose response in myopia control?

A dose-response is where an increasing amount of a medication or intervention is correlated with a better clinical outcome. When it comes to myopia control, we investigate the evidence for a dose-response with spectacle, contact lens, atropine and outdoor time interventions.

The Topcon MYAH – Q&A with Mario Teufl

In our Q&A interview format, we talk to Mario Teufl, optometrist from Austria, who explains how he uses the Topcon MYAH in his practice for myopia management – from axial length to topography to dry eye and more.

Blur adaptation in children wearing orthokeratology

After 1 month of wearing orthokeratology lenses, children were shown to have reduced accommodative lag and increased blur sensitivity, leading to the suggestion that blur adaptation is conducive in achieving good visual acuities and visual function in ortho-k wear.

Can we predict success with orthokeratology?

This study investigated the accuracy of using pre-treatment axial elongation and changes in refractive sphere in predicting myopia control success in orthokeratology. Axial length was the more accurate method for categorisation of slow, moderate or rapid progression, and fast progressors benefited the most from ortho-k wear.

Optimizing safety in orthokeratology

Optimizing safety in orthokeratology is crucial for successful patient outcomes. Learn about compliance challenges in children wearing ortho-k and how to manage them, as well as the latest data on safety and rates of complications as reported from clinical studies.

Orthokeratology: Is it a compliance issue or lens fitting problem?

In this case of a poor outcome in orthokeratology wear which appears to indicate non-compliance, a systematic approach highlighted the cause. Read more to learn about the systematic troubleshooting process and factors involved in compliance and successful ortho-k wear.

Should we fit orthokeratology to a child with trichiasis?

Orthokeratology is effective for myopia control but is it suitable for a child with trichiasis and corneal staining? This case compiles the treatment suggestions for managing a young myopic patient with trichiasis from the Facebook community, with a focus on safety.

Does pupil size matter in contact lens fitting?

Does pupil size affect myopia control efficacy when fitting soft contact lenses or orthokeratology for myopia control? This case study explores the relationship between pupil size, various optic designs and how both vision and myopia outcomes could be impacted.