论文部分内容阅读
目的评估弱视儿童治愈后的双眼视知觉功能。设计回顾性病例系列。研究对象75例屈光不正、屈光参差弱视治愈后儿童。方法将患者按矫正视力分为轻度弱视(0.6~0.8)、中度弱视(0.2~0.5)和重度弱视(≤0.1)三组,比较分析三组弱视患儿治愈后双眼视知觉功能量化评估检测的状况。主要指标知觉眼位差值与注视稳定性的波动差值、信噪比平衡点差值,对比度平衡点差值、随机点0阶立体视、1阶立体视、2阶立体视检测的通过百分比。结果轻、中、重度弱视治愈后3°视标水平眼位均值依次为(22.63±18.94)、(31.96±32.70)、(46.86±31.70)像素,垂直眼位均值依次为(3.59±4.36)、(4.66±4.29)、(9.93±10.27)像素;1°视标水平眼位均值依次为(28.00±22.68)、(36.06±26.90)、(31.33±22.42)像素,垂直眼位均值依次为(4.74±5.15)、(5.69±5.04)、(7.80±12.03)像素。注视稳定性均值依次为(4.11±1.99)、(4.79±2.37)、(2.36±3.24)像素。静态信噪比的平衡点均值分别为(6.52±1.31)、(6.12±1.72)、(5.83±2.68)级,静态对比度的平衡点均值分别为(7.70±1.78)、(7.12±2.29)、(6.53±3.05)级,静态信噪比差值分别为(1.48±1.48)、(1.63±1.45)、(2.20±1.89)级,静态对比度差值分别为(1.92±1.66)、(2.24±1.95)、(3.60±2.89)级。随机点0阶立体视均达到100“的儿童有53例(71%),1阶立体视68例(90%),2阶立体视通过73例(97%)。结论弱视治愈后,双眼知觉眼位、双眼间的抑制程度及不同通道的立体视功能仍未达到正常水平,这种新的检查方法和结果分析对认识视力治愈后仍存在有视觉神经缺损提供了新的切入点。
Objective To evaluate the binocular visual acuity after amblyopia treatment in children. Design retrospective case series. Subjects 75 cases of refractive errors, anisometropic amblyopia children after treatment. Methods The corrected visual acuity was divided into three groups: mild amblyopia (0.6 ~ 0.8), moderate amblyopia (0.2 ~ 0.5) and severe amblyopia (≤0.1). The visual assessment of binocular visual acuity Detected status. The main indicators of perception of eye position difference and gaze stability of the fluctuations in the difference between the signal to noise ratio of the balance point, contrast balance point difference, random point 0 stereo, 1 stereo, 2 stereo stereo test pass percentage . Results The mean eye position of 3 ° optobloc was (22.63 ± 18.94), (31.96 ± 32.70) and (46.86 ± 31.70) pixels in the order of mild, moderate and severe amblyopia, followed by (3.59 ± 4.36) (4.66 ± 4.29) and (9.93 ± 10.27) pixels respectively. The average eye position values at 1 ° optotypes were (28.00 ± 22.68), (36.06 ± 26.90) and (31.33 ± 22.42) pixels, ± 5.15), (5.69 ± 5.04), (7.80 ± 12.03) pixels. The average stability of gaze was (4.11 ± 1.99), (4.79 ± 2.37) and (2.36 ± 3.24) pixels, respectively. The mean balance points of static signal to noise ratio were (6.52 ± 1.31), (6.12 ± 1.72) and (5.83 ± 2.68) respectively, and the mean values of static contrast were (7.70 ± 1.78), (7.12 ± 2.29) and 6.53 ± 3.05) and the difference of static signal-to-noise ratio were (1.48 ± 1.48), (1.63 ± 1.45) and (2.20 ± 1.89) respectively, and the differences of static contrast were (1.92 ± 1.66) and (2.24 ± 1.95) , (3.60 ± 2.89) level. There were 53 (71%) children with stereopsis of 0 ”at random and 0" stereopsis, 68 (90%) with first-order stereopsis and 73 (97%) with stereopsis by second- Perception of eye position, the degree of inhibition of both eyes and different channels of stereopsis function has not yet reached the normal level, this new method of examination and analysis of the results of understanding vision still exists after the cure for visual nerve defects provide a new entry point.