弱视患儿治疗前后的对比敏感度的比较

发布时间：2018-02-12 06:28

本文关键词： 弱视弱视训练对比敏感度治疗刺激　出处：《中南大学》2011年硕士论文　论文类型：学位论文

【摘要】：摘要目的探讨矫治视力正常的弱视患儿治疗前后的对比敏感度变化情况。方法对40例经治疗后视力恢复至5.0或以上的弱视患儿治疗前后的对比敏感度和40例年龄相匹配的正常儿童的对比敏感度进行测量。测量采用美国Stereo Optical公司所研制的Optec6500视功能测试仪,对患儿以及正常儿童分别进行五种不同空间频率[1.5、3、6、12和18周/度(cycles/degree c/d)]对比敏感度的测量。结果经治疗后视力恢复弱视儿童的对比敏感度较治疗前全频率均有所提高,差异具有统计学意义,但仍较正常对照组差,峰值左移,尤以高频率下降明显。结论视力矫治正常后的弱视患儿对比敏感度值仍存在异常,但较治疗前有明显提高,弱视患儿在治疗过程中,不能单纯选用视力检查,需要引入其他视功能评价方法,对视力恢复正常但其他视功能异常的患儿还需进一步治疗。
[Abstract]:Abstract. Objective to investigate the changes of contrast sensitivity in children with amblyopia with normal visual acuity before and after treatment. Methods the contrast sensitivity of 40 amblyopia children with visual acuity of 5.0 or above and 40 age-matched normal children before and after treatment were measured. Optec6500 visual function tester, The contrast-sensitivity of children and normal children were measured at five different spatial frequencies (1.5 ~ 3X / h ~ (12) and 18 weeks / d) respectively. Results the contrast sensitivity of children with amblyopia recovered after treatment was higher than that before treatment, and the difference was statistically significant, but it was still worse than that of the normal control group, and the peak value shifted to the left, especially the high frequency decreased obviously. Conclusion the contrast sensitivity of amblyopia children with normal visual acuity is still abnormal, but it is obviously higher than that before treatment. In the treatment of amblyopia, the visual acuity should not be simply checked, and other evaluation methods of visual function should be introduced. Further treatment is needed for children with normal visual acuity but other abnormal visual function.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：R777.44

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