| 儿童双眼视觉竞争平衡点正常值研究 |
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| 引用本文： | 赵国宏,付晶,王京辉,成娟娟,卢炜,阎丽,刘俊.儿童双眼视觉竞争平衡点正常值研究[J].眼科,2016,25(5):310. |
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| 作者姓名： | 赵国宏 付晶 王京辉 成娟娟 卢炜 阎丽 刘俊 |
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| 作者单位： | 100730.首都医科大学附属北京同仁医院 北京同仁眼科中心 眼科学与视觉科学北京市重点实验室（赵国宏、付晶、王京辉、成娟娟、卢炜）；512511 广州，国家医疗保健器具工程技术研究中心（阎丽、刘俊） |
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| 摘 要： | 目的 了解正常视力儿童和屈光不正弱视儿童双眼视觉竞争平衡点的正常值。设计 前瞻性病例系列。研究对象 97例正常视力儿童和60例屈光不正性弱视儿童。方法 应用基于计算机平台的视感知觉检查方法检查双眼视觉竞争平衡点值，通过双眼对比敏感度和信噪比检查的级别来确定平衡点，包括静态检查和增加闪烁刺激的动态检查。主要指标 动静态信噪比平衡点值及动静态对比度平衡点值。结果 正常视力儿童静态信噪比平衡点值为（7.44±0.052）级（95%CI：7.34~7.55级），动态信噪比的平衡点值为（7.50±0.048）级（95%CI：7.41~7.60级）；静态对比度的平衡点值为（8.46±0.085）级（95%CI：8.29~8.63级），动态对比度的平衡点值为（8.57±0.089）级（95%CI：8.40~8.75级）。屈光不正弱视儿童静态信噪比的平衡点值为（5.48±0.186）级（95%CI：5.47~6.21级），动态信噪比的平衡点值为（6.16±0.177）级（95%CI：5.81~6.52级）；静态对比度的平衡点值为（7.24±0.244）级（95%CI：6.76~7.73级），动态对比度的平衡点值为（7.52±0.239）级（95%CI：7.05~8.00级）。弱视患儿平衡点值均低于正常视力儿童（P均<0.001）。正常视力儿童动静态信噪比及动静态对比度双眼间级别差值＜1，而屈光不正弱视儿童≥2。结论 儿童信噪比平衡点值≥7级，对比度平衡点值≥8级可为临床正常值判断参考范围。弱视患儿的信噪比平衡点值、对比度平衡点值均低于正常儿童，双眼间级别差值高于正常视力儿童。（眼科，2016, 25： 310-313）
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| 关 键 词： | 弱视 双眼视觉 对比度 信噪比 |
| 收稿时间： | 2015-11-25 |
The binocular rivalry of amblyopic children and children with normal visual acuity |
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| ZHAO Guo-hong,FU Jing,WANG Jing-hui,CHENG Juan-juan,LU Wei,YAN Li,LIU Jun.The binocular rivalry of amblyopic children and children with normal visual acuity[J].Ophthalmology in China,2016,25(5):310. |
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| Authors: | ZHAO Guo-hong FU Jing WANG Jing-hui CHENG Juan-juan LU Wei YAN Li LIU Jun |
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| Affiliation: | 1. Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Key Laboratory of Ophthalmology and Visual Science, Capital Medical University, Beijing 100730, China; 2. National Engineering Research Center for Healthcare Devices, Guangzhou 512511, China |
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| Abstract: | Objective To find out the normal range of the binocular rivalry of children with normal vision and to investigate the characteristics of the binocular rivalry of amblyopic children. Design Prospective case series. Participants 97 children with normal visual acuity and 60 amblyopic children. Methods The binocular rivalry of the amblyopic children and children with normal visual acuity were assessed using the computer based visual perception examination. Main Outcome Measures The binocular visual balance point of dynamic contrast sensitivity (DCS), static contrast sensitivity (SCS), dynamic signal to noise ratio (DSNR), and static signal to noise ratio (SSNR). Result In the children with normal visual acuity, the SSNR point was 7.44±0.052 grade (95% CI: 7.34~7.55 grade), the DSNR point was 7.50±0.048 grade (95% CI: 7.41~7.60 grade); the SCS point was 8.46±0.085 grade (95% CI: 8.29~8.63 grade), and the DCS point was 8.57±0.089 grade (95% CI: 8.40~8.75 grade). In the amblyopic children, the SSNR point was 5.48±0.186 grade (95% CI: 5.47~6.21 grade), the DSNR point was 6.16±0.177 grade (95% CI: 5.81~6.52 grade); the SCS point was 7.24±0.244 grade (95% CI: 6.76~7.73 grade), the DCS point was 7.52±0.239 grade (95% CI: 7.05~8.00 grade). The binocular balance point value in amblyopic children was lower than in normal vision children (all P<0.001). The difference value between two eyes in the normal vision children was less than 1 grade while the difference value between two eyes in the amblyopic children was more than 2 grades. Conclusion We recommend that the binocular balance point of the contrast sensitivity over 7 grade and signal to noise ratio over 8 grade as the normal standard. There is obvious difference between the amblyopic children and the normal vision children in the binocular balance point value, and the differences between two eyes in amblyopic children are greater than that in normal vision children. (Ophthalmol CHN, 2016, 25: 310-313) |
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| Keywords: | amblyopia binocular vision contrast sensitivity signal to noise ratio |
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