The Effect of Orthokeratology on Accommodative and Convergence Function: A Clinic Based Pilot Study

Paul Brand, BAppSc(Optom), GradCertOcTher

 Background: Orthokeratology is a successful treatment for patients with myopia. There has been little research on its effects on accommodation and convergence.

Methods: Eleven subjects presenting for orthokeratology had accommodative and convergence function assessed pre- and post-treatment. Based on the results, patients were categorised as normal or embedded. The pre- and post-treatment results were compared.

Results: This pilot study found that of the 11 subjects, 10 (90.1%) demonstrated an improved accommodative convergence profile after treatment (p=0.003). The subject who demonstrated no change was the only one that had a normal profile before treatment. No subject displayed a worse accommodative convergence profile post-treatment.

Conclusion: This suggests that orthokeratology has a positive effect on accommodation and convergence function. More research with larger sample sizes is required to confirm this result.


Keywords: accommodation, myopia, myopia control, orthokeratology