Chan Ben, Cho Pauline, Cheung Sin Wan
School of Optometry, The Hong Kong Polytechnic University, Hong Kong SAR, China.
Clin Exp Optom. 2008 Sep;91(5):453-60. doi: 10.1111/j.1444-0938.2008.00259.x. Epub 2008 Mar 18.
The aim of this study was to analyse clinical data of children undergoing orthokeratology (ortho-k) and to investigate patients'/parents' perspective on ortho-k via telephone interviews.
Clinical records of children undergoing ortho-k from a university optometry clinic were reviewed and the effects of ortho-k on refraction, vision and cornea were investigated. A telephone interview was conducted to solicit patients'/parents' perspective of the treatment.
One hundred and eight files were reviewed. Median age of the children was nine years (range six to 15); mean (+/-SD) pre-treatment refractive sphere was -3.56 +/- 1.49 D and the median refractive cylinder was -0.50 D (range zero to -4.25 D). Significant refractive spherical reduction (58 per cent), improvement in unaided vision and corneal topographical changes were noted after only one night of wear. No significant change in astigmatism was found. Corneal staining was the most commonly observed complication with ortho-k and more than 80 per cent of patients were advised to apply ocular lubricants to loosen the lens before lens removal. Ortho-k was mainly undertaken for myopic control and about 90 per cent of the respondents reported good/very good unaided vision after ortho-k and ranked the treatment as satisfactory or very good. Lens binding and ocular discharge were the most frequently reported problems during the treatment.
Under close monitoring, overnight ortho-k is effective and safe for reducing low to moderate myopia and the treatment is well accepted by the children.
本研究旨在分析接受角膜塑形术（ortho-k）的儿童的临床数据，并通过电话访谈调查患者/家长对角膜塑形术的看法。
回顾了一家大学验光诊所中接受角膜塑形术的儿童的临床记录，并研究了角膜塑形术对屈光、视力和角膜的影响。进行了电话访谈以征求患者/家长对该治疗的看法。
共审查了108份档案。儿童的中位年龄为9岁（范围为6至15岁）；治疗前平均（±标准差）屈光球镜度数为-3.56±1.49 D，中位屈光柱镜度数为-0.50 D（范围为0至-4.25 D）。仅佩戴一晚后，屈光球镜度数就有显著降低（58%），裸眼视力得到改善，角膜地形图也有变化。散光未见显著变化。角膜染色是角膜塑形术中最常见的并发症，超过80%的患者在取镜前被建议使用眼部润滑剂以松动镜片。角膜塑形术主要用于控制近视，约90%的受访者表示角膜塑形术后裸眼视力良好/非常好，并将该治疗评为满意或非常满意。镜片粘连和眼部分泌物是治疗期间最常报告的问题。
在密切监测下，夜间角膜塑形术对于降低低度至中度近视有效且安全，并且该治疗得到儿童的良好接受。
