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International survey of orthokeratology contact lens fitting

Version 2 2024-06-06, 12:11
Version 1 2019-01-31, 11:01
journal contribution
posted on 2024-06-06, 12:11 authored by Philip B Morgan, Nathan Efron, Craig A Woods, Jacinto Santodomingo-Rubido, International Contact Lens Prescribing Survey Consortium
PURPOSE: . To determine the extent of orthokeratology (OK) contact lens fitting worldwide and to characterize associated demographics and fitting patterns. METHODS: . Survey forms were sent to contact lens fitters in 45 countries between January and March every year for 14 consecutive years (2004 - 2017, inclusive). Practitioners were asked to record data relating to the first 10 contact lens fits or refits performed after receiving the survey form. RESULTS: . Data were obtained for 295,044 contact lens fits, of which 2,702 were with OK lenses and 292,342 were with other lens types (non-OK). Overall, OK lenses represented 1.2% of all contact lens fits, with significant differences between nations (p < 0.0001), ranging from no fits recorded in Brazil, Egypt, Indonesia, Iran, Lithuania, Nepal and the United Arab Emirates, to 6.0% in The Netherlands. There has been a slight overall increase in OK lens fitting over the survey period (p < 0.0001). OK lenses were fitted to younger persons (OK, 25.0 ± 12.8 years vs. non-OK, 39.8 ± 14.9 years) (p < 0.0001). A higher proportion of males (55%) were fitted with OK lenses versus non-OK lenses (30%) (p < 0.0009). There was a skewed distribution towards OK lenses being fit with higher oxygen permeable materials (p < 0.0001) and on a planned replacement basis (p < 0.0001). CONCLUSIONS: . OK contact lens prescribing is a niche activity, with this lens type typically being fitted in high oxygen permeable materials on a planned replacement basis to younger males. The slightly increasing rate of OK fitting, albeit at a very low level, may be attributed to practitioner interest in the reported myopia control properties of this lens type.

History

Journal

Contact lens and anterior eye

Volume

42

Pagination

450-454

Location

Amsterdam, The Netherlands

eISSN

1476-5411

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2018, British Contact Lens Association

Issue

4

Publisher

Elsevier

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