Assessment of vergence facility in a sample of older adults with presbyopia
Assessment of vergence facility in a sample of older adults with presbyopia
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DOI：
10.1097/00006324-199811000-00023
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发表时间：
1998-11-01
影响因子：
1.4
通讯作者：
Siderov, J
中科院分区：
文献类型：
--
作者：
Pellizzer, S;Siderov, J
目的.本研究的目的是确定评估的聚散设施是否是临床上有用的老年人与老视，并确定试点规范数据为这个年龄范围。方法.在50名平均年龄为58.7岁的无症状受试者样本中，使用安装在临床翻转架中的8个（Delta）基底内（BI）和12个（Delta）基底外（BO）棱镜测量聚散度。在几周的过程中，在四个不同的场合进行了1分钟的测试。结果在完成研究的42名受试者中，只有21名受试者的聚散度设施可以令人满意地测量。该组的平均聚散设施约为7个周期每分钟（cpm），与以前的结果在年轻的受试者使用类似的范例。在第一个和第二个30-s测试期间，聚散度设施没有差异，在4个测试场合中，平均聚散度设施也没有任何差异。然而，重测重复性很差。平均而言，BI棱柱相比BO棱柱相（BI 5.2秒和BO 3.7秒）花费更长的时间熔融。结论.我们的研究结果表明，在老年人老花眼的聚散设施的高度变异。在决定聚散度测量是否用于调查老年老视患者的双眼视觉之前，需要更多的研究。
Purpose. The aim of this study was to establish whether assessment of vergence facility is clinically useful in older adults with presbyopia and to determine pilot normative data for this age range. Methods. Vergence facility was measured in a sample of 50 asymptomatic subjects with a mean age of 58.7 years using 8(Delta) base-in (BI) and 12(Delta) base-out (BO) prisms mounted in clinical flipper frames. Testing was performed for 1 min on four separate occasions over the course of a few weeks. Results. Of the 42 subjects that completed the study, vergence facility could be satisfactorily measured on only 21 subjects. The mean vergence facility for this group was approximately 7 cycles per minute (cpm), commensurate with previous results in younger subjects using a similar paradigm. There were no differences in vergence facility between the first and second 30-s periods of testing, nor were there any differences in average vergence facility over the 4 test occasions. Test-retest repeatability, however, was poor. The BI prism phase took longer, on average, to fuse than the BO prism phase (BI 5.2 s and BO 3.7 s). Conclusions. Our results show a high degree of variability in vergence facility in older subjects with presbyopia. More research is required before deciding whether measurements of vergence facility are of use in investigating binocular vision of older patients with presbyopia.