Eurolens Research, Division of Pharmacy and Optometry, The University of Manchester, UK.
Institute of Health and Biomedical Innovation, and School of Optometry and Vision Science, Queensland University of Technology, Australia.
Cont Lens Anterior Eye. 2019 Aug;42(4):450-454. doi: 10.1016/j.clae.2018.11.005. Epub 2018 Nov 16.
. To determine the extent of orthokeratology (OK) contact lens fitting worldwide and to characterize associated demographics and fitting patterns.
. 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.
. 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).
. 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.
确定全球角膜塑形术（OK）隐形眼镜适配的程度，并描述相关的人口统计学和适配模式。
在 14 年间（2004 年至 2017 年）的每年 1 月至 3 月，向 45 个国家的隐形眼镜配镜师发送调查问卷。要求从业者记录收到调查问卷后进行的前 10 次隐形眼镜适配或重新适配的数据。
共获得 295044 次隐形眼镜适配数据，其中 2702 次为 OK 镜片，292342 次为其他镜片类型（非 OK 镜片）。总体而言，OK 镜片占所有隐形眼镜适配的 1.2%，不同国家之间存在显著差异（p<0.0001），从巴西、埃及、印度尼西亚、伊朗、立陶宛、尼泊尔和阿拉伯联合酋长国没有记录到适配，到荷兰的 6.0%。在调查期间，OK 镜片的适配略有总体增加（p<0.0001）。OK 镜片适配的人群更年轻（OK 镜片，25.0±12.8 岁；非 OK 镜片，39.8±14.9 岁）（p<0.0001）。男性（55%）适配 OK 镜片的比例高于非 OK 镜片（30%）（p<0.0009）。OK 镜片更倾向于适配高透氧材料（p<0.0001）和计划更换（p<0.0001）。
OK 隐形眼镜处方是一种利基活动，这种镜片类型通常在高透氧材料上以计划更换的方式适配于年轻男性。OK 适配率略有增加，尽管非常低，但可能归因于从业者对这种镜片类型报告的近视控制性能的兴趣。
