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3
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Change in convergence and accommodation after two weeks of eye exercises in typical young adults.典型年轻成年人进行两周眼保健操后集合和调节功能的变化
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Clinical test responses to different orthoptic exercise regimes in typical young adults.典型年轻成年人对不同视轴矫正运动方案的临床反应。
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Effects of orthoptic treatment on the CA/C and AC/A ratios in convergence insufficiency.正位视治疗对集合不足中CA/C和AC/A比率的影响。
Invest Ophthalmol Vis Sci. 2006 Jul;47(7):2876-80. doi: 10.1167/iovs.04-1372.

集合不足患者视觉治疗中刺激和反应性AC/A比率的变化

Changes in stimulus and response AC/A ratio with vision therapy in Convergence Insufficiency.

作者信息

Singh Neeraj Kumar, Mani Revathy, Hussaindeen Jameel Rizwana

机构信息

Srimathi Sundari Subramanian Department of Visual Psychophysics, Elite School of Optometry, Chennai, India(1).

Binocular Vision and Vision Therapy Clinic, Sankara Nethralaya, Chennai, India.

出版信息

J Optom. 2017 Jul-Sep;10(3):169-175. doi: 10.1016/j.optom.2016.10.001. Epub 2017 Jan 24.

DOI:10.1016/j.optom.2016.10.001
PMID:28126262
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5484784/
Abstract

PURPOSE

To evaluate the changes in the stimulus and response Accommodative Convergence to Accommodation (AC/A) ratio following vision therapy (VT) in Convergence Insufficiency (CI).

METHODS

Stimulus and response AC/A ratio were measured on twenty five CI participants, pre and post 10 sessions of VT. Stimulus AC/A ratio was measured using the gradient method and response AC/A ratio was calculated using modified Thorington technique with accommodative responses measured using WAM-5500 open-field autorefractor. The gradient stimulus and response AC/A cross-link ratios were compared with thirty age matched controls.

RESULTS

Mean age of the CI and control participants were 23.3±5.2 years and 22.7±4.2 years, respectively. The mean stimulus and response AC/A ratio for CI pre therapy was 2.2±0.72 and 6.3±2.0 PD/D that changed to 4.2±0.9 and 8.28±3.31 PD/D respectively post vision therapy and these changes were statistically significant (paired t-test; p<0.001). The mean stimulus and response AC/A ratio for controls was 3.1±0.81 and 8.95±2.5 PD/D respectively.

CONCLUSIONS

Stimulus and response AC/A ratio increased following VT, accompanied by clinically significant changes in vergence and accommodation parameters in subjects with convergence insufficiency. This represents the plasticity of the AC/A crosslink ratios that could be achieved with vision therapy in CI.

摘要

目的

评估集合不足（CI）患者在视觉训练（VT）后调节性集合与调节（AC/A）比值的刺激和反应变化。

方法

对25名CI患者在进行10次VT治疗前后测量刺激和反应AC/A比值。刺激AC/A比值采用梯度法测量，反应AC/A比值采用改良的索林顿技术计算，调节反应使用WAM-5500开放式自动验光仪测量。将梯度刺激和反应AC/A交叉比值与30名年龄匹配的对照组进行比较。

结果

CI组和对照组参与者的平均年龄分别为23.3±5.2岁和22.7±4.2岁。CI组治疗前刺激和反应AC/A比值的平均值分别为2.2±0.72和6.3±2.0棱镜度/屈光度，视觉训练后分别变为4.2±0.9和8.28±3.31棱镜度/屈光度，这些变化具有统计学意义（配对t检验；p<0.001）。对照组刺激和反应AC/A比值的平均值分别为3.1±0.81和8.95±2.5棱镜度/屈光度。

结论

VT后刺激和反应AC/A比值增加，同时集合不足患者的聚散和调节参数出现临床上的显著变化。这代表了在CI中通过视觉训练可以实现的AC/A交叉比值的可塑性。