Allen Peter M, Dedi Sonia, Kumar Dimple, Patel Tanuj, Aloo Mohammed, Wilkins Arnold J
Vision and Eye Research Unit, Postgraduate Medical Institute, Cambridge CB1 1PT, UK.
Perception. 2012;41(12):1458-67. doi: 10.1068/p7390.
We manipulated the accommodative response using positive and negative lenses to study any association between symptoms of pattern glare and accommodation. Two groups of eighteen young adults were selected from seventy-eight on the basis (i) that their rate of reading increased by 5% or more with an overlay compared to their rate without it, and (ii) that they reported more than 2 symptoms of pattern glare (group 1) or had no such increment in reading speed and reported fewer than 3 symptoms (group 2). Under double-masked conditions participants observed at 0.4 m a pattern of stripes while measurements of accommodation were made using an open field autorefractor with and without positive and negative trial lenses (0.75 D), and with and without a coloured overlay. Pattern glare was also assessed with and without the trial lenses. Without lenses, the mean accommodative response in group 1 was 1.55 D, a lag of 0.95 D +/- 0.24 D relative to the demand. The lag decreased by 0.43 D (p < 0.0001) when the chosen overlay was used, an effect that was not shown in group 2 even when lag increased with negative trial lenses (p = 0.13). In both groups, pattern glare scores were reduced by the trial lenses, but were unaffected by the sign of the lenses. This suggests that symptoms of pattern glare are not strongly associated with accommodative response.
我们使用正透镜和负透镜来控制调节反应，以研究条纹状眩光症状与调节之间的任何关联。从78名年轻成年人中选取了两组，每组18人，选取依据如下：（i）与不使用覆盖物时相比，他们在使用覆盖物时阅读速度提高了5%或更多；（ii）他们报告有超过2种条纹状眩光症状（第1组），或者阅读速度没有这种提高且报告的症状少于3种（第2组）。在双盲条件下，参与者在0.4米处观察条纹图案，同时使用开放式自动验光仪在有和没有正负试验透镜（0.75D）以及有和没有彩色覆盖物的情况下测量调节。还在有和没有试验透镜的情况下评估条纹状眩光。不使用透镜时，第1组的平均调节反应为1.55D，相对于需求有0.95D±0.24D的滞后。当使用选定的覆盖物时，滞后减少了0.43D（p<0.0001），即使在使用负试验透镜时滞后增加，第2组也未显示出这种效果（p = 0.13）。在两组中，试验透镜都降低了条纹状眩光评分，但不受透镜正负的影响。这表明条纹状眩光症状与调节反应没有密切关联。
