Puell María C, Benítez-del-Castillo José M, Martínez-de-la-Casa José, Sánchez-Ramos Celia, Vico Eva, Pérez-Carrasco María J, Pedraza Constanza, del-Hierro Almudena
School of Optometry, Complutense University, Madrid, Spain.
Acta Ophthalmol Scand. 2006 Aug;84(4):527-31. doi: 10.1111/j.1600-0420.2006.00671.x.
To evaluate contrast sensitivity and disability glare in patients with dry eye using the Contrast Glaretester 1000.
Contrast sensitivity and disability glare were determined in 33 eyes of 33 patients with dry eye and 30 eyes of 30 healthy control subjects for six target sizes with a visual angle of 6.3-0.7 degrees using the Contrast Glaretester 1000, whose working mechanism is similar to that of the conventional perimetry instrument.
Contrast sensitivity was significantly worse in dry eye group when viewing all target sizes (reduction of 0.10-0.25 log contrast units, p < 0.01) except at 6.3 degrees. In the presence of glare, differences in log contrast sensitivity between the groups (0.10-0.25 units) were significant (p < 0.01) for all target sizes, with the dry eye group showing worse results. The reduction in contrast sensitivity induced by glare (disability glare) was significantly worse in the dry eye group versus the control group but only for the 2.5-degree size target, where 0.14 log contrast units were lost.
Contrast sensitivity with and without glare was significantly reduced in patients with dry eye compared with control subjects, but the number of log contrast units lost with glare (disability glare) was similar in the two groups, except for the 2.5-degree size target.
使用对比眩光测试仪1000评估干眼患者的对比敏感度和失能眩光。
使用对比眩光测试仪1000，对33例干眼患者的33只眼和30例健康对照者的30只眼，针对视角为6.3 - 0.7度的六个目标大小测定对比敏感度和失能眩光，该测试仪的工作机制与传统视野计相似。
除6.3度视角外，干眼组在观察所有目标大小时对比敏感度均显著更差（对比单位降低0.10 - 0.25 log，p < 0.01）。在存在眩光的情况下，两组间对数对比敏感度差异（0.10 - 0.25单位）对于所有目标大小均显著（p < 0.01），干眼组结果更差。干眼组由眩光（失能眩光）引起的对比敏感度降低显著高于对照组，但仅对于2.5度大小的目标，损失了0.14 log对比单位。
与对照者相比，干眼患者在有眩光和无眩光情况下的对比敏感度均显著降低，但除2.5度大小目标外，两组因眩光（失能眩光）损失的对数对比单位数量相似。
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