目的:研究不同因素所致视疲劳患者眼动参数的异常,初步探讨刺激性AC/A与视疲劳之间的关系。方法:序贯选取江苏省中医院眼科门诊视疲劳患者84例,根据有无屈光因素分为A(屈光性)、B(非屈光性)两组各42例,进行6m,40cm,40cm+1D隐斜量的测量,计算各患者的计算性AC/A和梯度性AC/A,分别与Morgan正常值进行比较,并进行两两比较。结果:A组,B组的远距离隐斜均明显大于此Morgan值(P<0.05),同样A组,B组的近距离40cm处隐斜量也大于Morgan值(P<0.05),而A组,B组的梯度性AC/A值均要显著低于4/1(P<0.05),但A,B两组之间远、近距隐斜及计算性AC/A、梯度性AC/A等参数的差异无统计学意义(P>0.05)。结论:视疲劳患者较正常人群在远近距离具有更高的外隐斜,而具有较低的梯度性AC/A值,刺激性AC/A值尚不能作为不同类型视疲劳的分类指标。

AIM:To investigate the asthenopia patients’ discrepancy of distance phoria,near phoria and accommodation convergence/accommodation(AC/A) caused by different factors.METHODS:Eighty-four asthenopia patients from outpatient department of Jiangsu Province Hospital of TCM were selected consecutively.The sample was divided into two groups:A group(wrong corrected) and B group(corrected well).Standard 6m,40cm,40cm+1D phoria examinations were operated,and AC/A was calculated,gradient AC/A were computed.All results were compared with Morgan value,and results of group A were also compared with those of group B.RESULTS:The 6m phoria of both group A and B were higher than the Morgan value(P<0.05).Likely,the 40cm phoria of both group A and B were also higher than the Morgan value(P<0.05).However,the results of gradient AC/A of both group A and B were lower than 4/1(P<0.05).There was no significant difference between group A and B in all parameters above(P>0.05).CONCLUSION:The asthenopia patients have higher exophoria in both distance and near phoria than normal,while they have lower gradient AC/A.Stimulated AC/A can not be regarded as a factor to classify different asthenopia types.

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中国南京中医药大学校青年自然基金资助项目(No.09XZR10)~~