International survey of orthokeratology contact lens fitting

Morgan, Philip B., Efron, Nathan, Woods, Craig A., Santodomingo-Rubido, Jacinto and Pult, Heiko ORCID: https://orcid.org/0000-0003-4371-8007 2019. International survey of orthokeratology contact lens fitting. Contact Lens and Anterior Eye 42 (4) , pp. 450-454. 10.1016/J.CLAE.2018.11.005

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Abstract

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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Optometry and Vision Sciences
Additional Information:	Heiko Pult is a member of: The International Contact Lens Prescribing Survey Consortium
Publisher:	Elsevier
ISSN:	1367-0484
Date of Acceptance:	7 November 2018
Last Modified:	06 Dec 2023 16:45
URI:	https://orca.cardiff.ac.uk/id/eprint/164143

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