摘要
目的:探讨近视患者配戴角膜塑形镜(orthokeratology,Ortho-K镜)前后视觉质量的变化情况。方法:选取江苏省溧阳市中医院眼科验配角膜塑形镜55例110眼青少年近视患者,在戴镜前、戴镜后7d,1、3、6mo五个时间点利用OQASTMⅡ视觉质量分析系统和Topolyzer角膜地形图进行检测,分别获得各参数:眼散射指数(optical scattering index,OSI)、MTF截止频率(MTF cut off)、斯特列尔比(Strehl ratio)、OQAS值(OV100%、OV20%、OV9%)、高度不对称性指数(index of highest asymmetry,IHA)、高度离心指数(index of highest decentration,IHD)和不规则指数(aberration coefficient,ABR)。结果:角膜塑形镜戴镜前裸眼视力为0.21±0.13,戴镜后7d,1、3、6mo分别为0.48±0.15、0.72±0.14、0.93±0.13、1.02±0.13,差异有统计学意义(P<0.05)。OSI配戴前与配戴后1、3、6mo比较具有统计学差异(P<0.05)。MTF cut off配戴前与配戴后1、3、6mo比较具有统计学差异(P<0.05)。Strehl ratio配戴前与配戴后1、3、6mo比较具有统计学差异(P<0.05)。OV9%配戴前与配戴后1、3、6mo比较具有统计学差异(P<0.05)。IHA配戴前与配戴后1、3、6mo分别为4.13±3.59、19.11±15.38、17.78±17.12、34.18±23.34,与配戴前相比差异均有统计学意义(P<0.05)。IHD配戴前与配戴后7d,1、3、6mo分别为0、0.02±0.01、0.02±0.02、0.03±0.02、0.03±0.01,与配戴前相比差异均有统计学意义(P<0.05)。ABR配戴前与配戴后7d,6mo分别为0.29±0.51、1.23±0.71、2.10±0.59,与配戴前相比差异均有统计学意义(P<0.05)。结论:夜戴型角膜塑形镜可引起视觉质量的下降,但下降程度轻微。角膜塑形镜治疗青少年初发性近视效果确切,角膜塑形镜能快速、有效地提高裸眼视力,在控制青少年近视发展方面是值得肯定的。
AIM：To explore the changes of visual quality in myopic eyes undergoing overnight orthokeratology.METHODS：Fifty-five myopia adolescents（110 eyes）were recruited.Optical scattering index（OSI）,MTF cut off,Strehl ratio,OQAS value（OV100%,OV20%,OV9%）,index of highest asymmetry（IHA）,index of highest decentration（IHD）,aberration coefficient（ABR） were performed before and 1wk,1,3 and 6mo after wearing orthokeratology with OQASTM Ⅱ and corneal topography.RESULTS：The uncorrected visual acuity（UCVA） before wearing orthokeratology lens was 0.21 ±0.13,but at 1wk,1,3 and 6mo after wearing were 0.48±0.15 0.72±0.14 0.93±0.13 and 1.02±0.13,respectively,and there were statistical differences before and after wearing（P〈0.05）.On OSI after wearing at 1,3 and 6mo compared with that before wearing,there were significant differences（P〈0.05）.On MTF cut off after wearing at 1,3 and 6mo compared with that before wearing,there were significant differences（P〈0.05）.On Strehl ratio after wearing at 1,3and 6 mo compared with that before wearing,there were significant differences（P〈0.05）.On OV9%after wearing at 1,3,6 mo compared with that before wearing,there were significant differences（P〈0.05）.IHA were 4.13 ±3.59,19.11±15.38,17.78±17.12,34.18±23.34 before and1,3 and 6 mo after wearing.Compared with that before wearing,IHA significantly increased（P〈0.05）.IHD were0,0.02±0.01,0.02±0.02,0.03±0.02,0.03±0.01 before and 1wk,1,3 and 6mo after wearing.Compared with that before wearing,IHD were significantly increased（P〈0.05）.ABR were 0.29 ±0.51,1.23 ±0.71,2.10 ±0.59 before and1 wk and 6mo after wearing.Compared with that before wearing,ABR were significantly decreased（P〈0.05）.CONCLUSION：Orthokeratology deteriorates vision quality.But the loss is acceptable.Orthokeratology can improve UCVA quickly and effectively.It is worth of affirmation on control of myopia.
出处
《国际眼科杂志》
CAS
2015年第12期2127-2129,共3页
International Eye Science
