【摘要】：目的應用雙通道視覺質量分析系統(tǒng)(optical quality analysis system,OQASⅡ)比較弱視兒童與正常兒童視覺質量和散射的差異,為臨床應用提供一定的參考依據。方法在廣西視光中心弱視門診就診患兒中隨機選取弱視兒童28例(53眼)和正常兒童28例(47眼)作為弱視組和正常對照組,所有入選兒童行客觀視覺質量分析系統(tǒng)(OQASⅡ,Visiometrics公司)檢測、散瞳檢影驗光和標準對數視力表評估。比較兩組屈光度、視力、MTF截止空間頻率(MTF cutoff)、斯特列爾比值(strehl ratio,SR)、客觀散射指數(objective scattering index,OSI)值及對比度為100%、20%、9%時的OV值(OQAS value,OV100%、OV20%和OV9%)。結果弱視組矯正視力和等效球鏡分別為0.26±0.17 log MAR和(2.91±3.25)D,弱視組MTF cutoff、SR、OSI、OV100%、OV20%和OV9%分別為(30.91±15.24)c·d-1、0.20±0.11、1.15±1.42、(1.03±0.51)c·d-1、(0.78±0.45)c·d-1、(0.52±0.38)c·d-1;正常對照組MTF cutoff、SR、OSI、OV100%、OV20%和OV9%分別為(37.49±9.81)c·d-1、0.23±0.07、0.74±1.39、(1.25±0.33)c·d-1、(0.94±0.30)c·d-1、(0.61±0.21)c·d-1。兩組兒童MTF cutoff、OV100%和OV20%比較,差異均有統(tǒng)計學意義(均為P0.05)。弱視兒童的球鏡和柱鏡度數與MTF cutoff、SR、OSI、OV100%、OV20%和OV9%均存在統(tǒng)計學意義的相關性(均為P0.05)。結論弱視兒童的視覺質量較正常兒童差,且主要表現在中高頻對比度部分下降,散射不是導致弱視兒童視覺質量下降的因素。
[Abstract]:Objective to compare the difference of visual quality and scattering between amblyopia children and normal children by using dual channel visual quality analysis system (optical quality analysis system,OQAS II), and to provide some reference for clinical application. Methods 28 amblyopia children (53 eyes) and 28 normal children (47 eyes) were randomly selected as amblyopia group and normal control group. All the selected children were treated with objective visual quality analysis system (OQAS II). Visiometrics) Detection, mydriasis optometry and standard logarithmic visual acuity scale evaluation. The diopter, visual acuity, MTF cutoff spatial frequency (MTF cutoff), Steller ratio (strehl ratio,SR), objective scattering index (objective scattering index,OSI) and contrast were compared with 100%, 20% and 9% of the two groups (OQAS value,OV100%,). (OV20% and OV9%). Results the corrected visual acuity and equivalent spherical lens were 0.26 鹵0.17 log MAR and (2.91 鹵3.25) D in amblyopia group, and (30.91 鹵15.24) c 路d-1 in amblyopia group, 0.20 鹵0.11 and 1.15 鹵1.42 in amblyopia group, respectively. (1.03 鹵0.51) c 路d-1, (0.78 鹵0.45) c 路d-1, (0.52 鹵0.38) c 路d-1; MTF cutoff,SR,OSI,OV100%,OV20% and OV9% in normal control group were (37.49 鹵9.81) c 路d ~ (- 1), 0.23 鹵0.07, 0.74 鹵1.39, (1.25 鹵0.33) c 路d ~ (- 1), (0.94 鹵0.30) c 路d ~ (- 1), respectively. (0.61 鹵0.21) c 路d-1. There were significant differences in MTF cutoff,OV100% and OV20% between the two groups (P 0.05). There was a statistically significant correlation between the number of spherical and cylindrical mirrors and MTF cutoff,SR,OSI,OV100%,OV20% and OV9% in amblyopia children (P 0.05). Conclusion the visual quality of amblyopia children is worse than that of normal children, and it is mainly manifested in the partial decrease of middle and high frequency contrast. Scattering is not the factor leading to the decrease of visual quality of amblyopia children.
【作者單位】： 廣西壯族自治區(qū)人民醫(yī)院視光科 廣西視光中心;
【基金】：廣西衛(wèi)生廳科研課題(編號:桂衛(wèi)重2012099、桂衛(wèi)Z2013345)~~
【分類號】：R777.44

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