Swenor Bonnielin K, Varadaraj Varshini, Dave Paulomi, West Sheila K, Rubin Gary S, Ramulu Pradeep Y
The Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland, United States.
Institute of Ophthalmology, University College of London, London, UK Biomedical Research Centre for Ophthalmology, London, United Kingdom.
Invest Ophthalmol Vis Sci. 2017 May 1;58(5):2456-2462. doi: 10.1167/iovs.17-21520.
To determine if the ability to divide attention affects the relationship between glaucoma-related vision loss and reading speed.
Better eye mean deviation (MD), contrast sensitivity (CS), and better-eye distance visual acuity (VA) were measured in 28 participants with glaucoma and 21 controls. Reading speeds were assessed using MNRead, IRest, and sustained silent reading tests (words per minute, wpm). The ability to divide attention was measured using the Brief Test of Attention (BTA; scored 0-10). Multivariable linear regression models were used to determine the relationship between visual factors and reading speeds. Effect modification by BTA score (low BTA: <7; high BTA: ≥7) was examined.
Worse CS (per 0.1 log unit) was associated with slower maximum reading speed on MNRead test for participants with low BTA scores (β = -9 wpm; 95% confidence interval [CI]: -16, -2), but not for those with high BTA scores (β = -2 wpm; 95% CI: -6, +2). Similarly, for the IRest test, worse CS was associated with slower reading speeds (β = -12 wpm; 95% CI: -20, -4) among those with low, but not high BTA scores (β = -4 wpm; 95% CI: -10, +2). For the sustained silent reading test, glaucoma status (versus controls), worse visual field (VF) MD (per 5 dB), and worse CS were associated with 39%, 21%, and 19% slower reading speeds, respectively, for those with low BTA scores (P < 0.05), but these associations were not significant among those with high BTA scores (P > 0.1 for all).
Decreased ability to divide attention, indicated by lower BTA scores, is associated with slower reading speeds in glaucoma with reduced CS and VF defects.
确定注意力分散能力是否会影响青光眼相关视力丧失与阅读速度之间的关系。
对28名青光眼患者和21名对照者测量了较好眼的平均偏差（MD）、对比敏感度（CS）和较好眼的远距离视力（VA）。使用MNRead、IRest和持续默读测试（每分钟单词数，wpm）评估阅读速度。使用注意力简短测试（BTA；评分0 - 10）测量注意力分散能力。多变量线性回归模型用于确定视觉因素与阅读速度之间的关系。研究了BTA评分（低BTA：<7；高BTA：≥7）的效应修正。
对于BTA评分低的参与者，较差的CS（每0.1对数单位）与MNRead测试中较慢的最大阅读速度相关（β = -9 wpm；95%置信区间[CI]：-16，-2），但对于BTA评分高的参与者则不然（β = -2 wpm；95% CI：-6，+2）。同样，对于IRest测试，较差的CS与BTA评分低的参与者中较慢的阅读速度相关（β = -12 wpm；95% CI：-20，-4），但与BTA评分高的参与者无关（β = -4 wpm；95% CI：-10，+2）。对于持续默读测试，对于BTA评分低的参与者，青光眼状态（与对照相比）、较差的视野（VF）MD（每5 dB）和较差的CS分别与慢39%、21%和19%的阅读速度相关（P < 0.05），但在BTA评分高的参与者中这些关联不显著（所有P > 0.1）。
较低的BTA评分表明注意力分散能力下降，这与青光眼患者中CS降低和VF缺陷导致的较慢阅读速度相关。
