Accommodation function comparison following use of contact lens for orthokeratology and spectacle use in myopic children: a prospective controlled trial  

作　　者：Yang Yang Li Wang Peng Li Jun Li 

机构地区：[1]Optometry Teaching & Research Office, Xi'an Medical University [2]Ophthalmology Department, the 451~(st) Hospital of PLA [3]Centers for Juvenile Myopia Control and Prevention, Shaanxi Institute of Ophthalmology

出　　处：《International Journal of Ophthalmology(English edition)》2018年第7期1234-1238,共5页国际眼科杂志（英文版）

基　　金：Supported by Special Scientific Research Program of Shaanxi Provincial Education Department(No.17JK0662)

摘　　要：AIM： To study effects of orthokeratology（Ortho-k） on accommodation function in myopic children. METHODS： A prospective, non-randomized, case-control study was performed from September to October 2016. Eighty-three children with myopia were divided into two groups. One group was treated with the rigid contact lens for overnight Ortho-k, and the other was treated with single-vision spectacle lens（SVL）. Accommodation function were assessed by accommodative amplitude（AA）, accommodative sensitivity（AS）, accommodative lag（Lag）, negative relative accommodation（NRA）, and positive relative accommodation（PRA） before and 1, 3, 6 and 12 mo after treated. RESULTS： Totally 72 myopic children were finished the follow-up： 37 in Ortho-k group and 35 in SVL group. Wearing time had a significant effect on AA, AS, Lag, and NRA of myopic children in two groups（all P〈0.05）. Meanwhile, there was an interaction effect between wearing time and wearing types（FAA=5.3, FAS=45.5, FLag=7.0, FNRA=3.7, all P〈0.05）. However, the between-group difference of AA（F=0.1）, AS（F=3.2）, Lag（F=1.1）, NRA（F=0.3）, and PRA（F=0.1） showed no significance. AA, AS, NRA, Lag and PRA were improved significantly in Ortho-k group within 1 to 6 mo after wearing. CONCLUSION： Wearing Ortho-k can improve the accommodation function of myopic children, which might be one of the mechanisms for myopia control.AIM： To study effects of orthokeratology（Ortho-k） on accommodation function in myopic children. METHODS： A prospective, non-randomized, case-control study was performed from September to October 2016. Eighty-three children with myopia were divided into two groups. One group was treated with the rigid contact lens for overnight Ortho-k, and the other was treated with single-vision spectacle lens（SVL）. Accommodation function were assessed by accommodative amplitude（AA）, accommodative sensitivity（AS）, accommodative lag（Lag）, negative relative accommodation（NRA）, and positive relative accommodation（PRA） before and 1, 3, 6 and 12 mo after treated. RESULTS： Totally 72 myopic children were finished the follow-up： 37 in Ortho-k group and 35 in SVL group. Wearing time had a significant effect on AA, AS, Lag, and NRA of myopic children in two groups（all P〈0.05）. Meanwhile, there was an interaction effect between wearing time and wearing types（FAA=5.3, FAS=45.5, FLag=7.0, FNRA=3.7, all P〈0.05）. However, the between-group difference of AA（F=0.1）, AS（F=3.2）, Lag（F=1.1）, NRA（F=0.3）, and PRA（F=0.1） showed no significance. AA, AS, NRA, Lag and PRA were improved significantly in Ortho-k group within 1 to 6 mo after wearing. CONCLUSION： Wearing Ortho-k can improve the accommodation function of myopic children, which might be one of the mechanisms for myopia control.

关 键 词：ORTHOKERATOLOGY ACCOMMODATION MYOPIA children 

分 类 号：R77[医药卫生—眼科]