SACCADIC EYE-MOVEMENTS AS A MEASURE OF THE EFFECT OF LOW-VISION REHABILITATION ON READING RATE
SACCADIC EYE-MOVEMENTS AS A MEASURE OF THE EFFECT OF LOW-VISION REHABILITATION ON READING RATE
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DOI：
10.1097/00006324-199306000-00010
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发表时间：
1993-06-01
影响因子：
1.4
通讯作者：
VIANA, MAG
中科院分区：
文献类型：
--
作者：
MCMAHON, TT;HANSEN, M;VIANA, MAG
我们通过一项设盲的临床研究评估了黄斑疾病患者的扫视眼球运动和阅读能力，以确定扫视频率的变化是否与阅读任务的阅读率或错误数的变化相关。我们使用了眼动特征的衡量标准的形式扫视频率得分（SFS）。12名黄斑疾病受试者在为期6周的密集住院视力康复计划前后进行了测试。平均年龄为70.9岁（63 - 77岁）。平均视力为10/ 100（10/40至10/200）。入组和出院时的平均阅读率分别为8.5字/分和20.9字/分（p = 0.02）。SFS从2.709改善至2.022（p = 0.07）。阅读错误从5.60改善至4.00（p = 0.03）。阅读率和SFS在治疗前和治疗后均呈高度负相关（Pearson r分别为-0.892和-0.896）。SFS和阅读错误的数量与治疗前和治疗后高度相关（Pearson r = 0.782和0.601，分别）。有趣的是，数据似乎分为两组，一组显示改善，另一组显示没有改善。聚类分析显示，阅读率，眼跳得分和阅读错误之间有很强的关联。除一个国家外，这两个专题组的成员在康复前后都是一致的。聚类对于阅读率和阅读错误是最明显的，而对于扫视分数则不那么明显。根据我们的测试范式生成的聚类数据表明，阅读率低于10个单词/分钟，短文章错误超过2个，SFS大于2.0的患者与最初超过这些数字的个体相比，在视力康复后阅读方面不太可能表现出改善。
We assessed saccadic eye movements and reading capabilities in individuals with macular disease by a masked clinical study to determine whether changes in saccadic frequency were correlated to changes in reading rates or number of errors for a reading task. We used a measure of eye movement characteristics in the form of a saccadic frequency score (SFS). Twelve subjects with macular disease were tested before and after an intense 6-week inpatient vision rehabilitation program. The mean age was 70.9 years (63 to 77 years). Mean visual acuity was 10/ 100 (10/40 to 10/200). Mean reading rates at entry and discharge were 8.5 words/min and 20.9 words/min, respectively (p = 0.02). SFS improved from 2.709 to 2.022 (p = 0.07). Reading errors improved from 5.60 to 4.00 (p = 0.03). Reading rates and SFS's were highly inversely correlated both pre-and post-treatment (Pearson r = -0.892 and -0.896, respectively). SFS and the number of reading errors were highly correlated with both pre- and post-treatment as well (Pearson r = 0.782 and 0.601, respectively). Interestingly the data appeared to cluster into two groups, one showing improvement and the other showing none. Cluster analysis revealed a strong association among reading rate, saccade scores, and reading errors. Membership in the two clusters is consistent pre- and post-rehabilitation in all but one case. Clustering is most evident for reading rate and reading errors and less so for saccade scores. Cluster data generated under our test paradigm suggest that patients with reading rates less than 10 words/min, more than 2 errors for a short passage, and SFS of greater than 2.0 are less likely to show improvement in reading with vision rehabilitation than are individuals who initially exceed these figures.