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目的本系列实验通过研究弱视噪声视功能的缺损和感知觉学习对弱视视觉功能的恢复作用,进一步证实大脑可塑性和感知觉学习对大脑可塑性的影响。方法随机选择屈光不正性弱视50例88眼和裸眼或矫正视力正常儿童40例80眼。正常组屈光不正儿童和弱视组戴镜1个月后,进行噪声视功能检查,将弱视组噪声视力与无噪声视力之差异常的病例分为治疗组和对照组,治疗组给予戴镜、遮盖并行知觉学习,对照组仅戴镜、遮盖。3个月后对两组进行视力及噪声视功能测试,比较结果。结果弱视组:噪声视力与无噪声视力之差异常率(80.7%),明显高于正常组(18.8%)。X~2=64.328,P<0.05。弱视组71眼噪声视力与无噪声视力之差大于2行。治疗组知觉学习后视力0.89±0.02与对照组视力0.56±0.02比较,经t检验,P<0.05,差别有统计学意义,治疗组噪声视力与无噪声视力之差1.55±0.11,与对照组3.45±0.19比较,经t检验,P<0.05差异有显著性。结论屈光不正性弱视不仅视力低下,他们排除外部噪声的能力也是降低的。知觉学习可促进屈光不正性弱视儿童噪声视功能的恢复,即知觉学习降低了屈光不正性弱视视觉系统的内部噪声和提高了视觉信息加工效率。
Aims This series of experiments investigated the effects of brain plasticity and sensory learning on brain plasticity by studying the impairment of amblyopia visual function by impairment and perceptual learning of amblyopia. Methods A total of 88 eyes (50 eyes) with refractive amblyopia and 40 eyes (80 eyes) with uncorrected or normal eyesight were selected randomly. The normal group of children with ametropia and wearing glasses for amblyopia group after 1 month, the noise visual function test, the amblyopia group of noise visual acuity and noise-free vision of the abnormal cases were divided into treatment group and control group, the treatment group was wearing glasses, Concealed parallel perception learning, control group wearing only mirror, cover. Three months later, visual acuity and noise were tested in two groups and the results were compared. Results Amblyopia group: the abnormal rate of noisy vision and no-noise visual acuity (80.7%), significantly higher than the normal group (18.8%). X ~ 2 = 64.328, P <0.05. Amblyopia group 71 eye noise and noise-free vision difference is greater than 2 lines. After treatment, the visual acuity of the control group was 0.89 ± 0.02 compared with that of the control group (0.56 ± 0.02). After t test, the difference was statistically significant (P <0.05). The difference between the noisy visual acuity and the no visual acuity was 1.55 ± 0.11 in the treatment group and 3.45 ± 0.19, t test, P <0.05 difference was significant. Conclusion Refractive amblyopia not only low vision, their ability to exclude external noise is also reduced. Perceptual learning can promote the recovery of noise visual function in children with ametropic amblyopia, that is, perceptual learning reduces the internal noise and improves the visual information processing efficiency of the refractive amblyopia visual system.