Reduction of asthenopia related to accommodative relaxation by means of far point stimuli
Reduction of asthenopia related to accommodative relaxation by means of far point stimuli
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DOI：
10.1111/j.1600-0420.2005.00352.x
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发表时间：
2005-02-01
期刊：
影响因子：
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通讯作者：
Miyake, N
中科院分区：
文献类型：
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作者：
Iwasaki, T;Tawara, A;Miyake, N
目的：进行一项实验研究的影响，反射性放松使用远点移位刺激，为减少fastenophies.Methods：22名女学生适应远点移位刺激后，立即在2分钟内持续15分钟的任务后，在三维显示。在试验前和试验后，对他们的重复性阶跃反应和症状进行了评估。在光学系统中的远点移位刺激，这是在折射计上呈现的，是通过将目标景物图像从远到近移动来创建的，线性地以每只眼睛的远点位置为中心。在2分钟的注视远点移位刺激，屈光的变化被记录在同一只眼睛。结果：而在远点移位刺激，10的22名受试者有屈光的变化，表现出远视移位，和其他12名受试者有屈光的变化，表现出近视移位。近视移位组试验后从远到近的辨别阶跃反应时间明显延长，视力计远靶点辨别滞后明显增加。在近视移位组中，“眼疲劳”、“眼痛”、“眼重”和“眼干”的症状在试验后也增加了。然而，在远视移位组，只有“眼干”的症状增加，没有减少的调节function.Conclusions：我们建议，通过反射性远点移位刺激反射性放松是有效的减少视疲劳。
Purpose: To conduct an experimental investigation of the effect of accommodative relaxation using far point shift stimuli for the reduction of asthenopia.Methods: Twenty-two female students accommodated to a far point shift stimuli during a 2-min period immediately after a 15-min sustained task on a three-dimensional display. Before and after the trial, their accommodative step response and symptoms were assessed. The far point shift stimuli in the optical system, which were presented on a refractometer, were created by moving the target scenery images from far to near, lineally centred about the far point position of each eye. During 2 min of fixating on the far point shift stimuli, changes in refraction were recorded in the same eye.Results: While looking at the far point shift stimuli, 10 of 22 subjects had changes in refraction that showed a hypermetropic shift, and the other 12 subjects had changes in refraction that showed a myopic shift. The time taken for the accommodative step response from far to near post-trial in the myopic shift group was markedly prolonged, and the accommodative lag at the far target in the optometer was significantly increased. In the myopic shift group, the symptoms of 'eye fatigue', 'eye pain', 'eye heaviness', and 'eye dryness' also increased after the trial. In the hyperopic shift group, however, only the symptom of 'eye dryness' increased, with no reduction of accommodation function.Conclusions: We suggest that accommodative relaxation by accommodative far point shift stimuli is effective in the reduction of asthenopia.