Wavefront sensing and the dynamics of tear film
Wavefront sensing and the dynamics of tear film
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DOI：
10.1097/ico.0b013e31812f69e8
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发表时间：
2007-10-01
期刊：
影响因子：
2.8
通讯作者：
Maeda, Naoyuki
中科院分区：
文献类型：
--
作者：
Koh, Shizuka;Maeda, Naoyuki
目的：总结前人关于眨眼后泪膜动力学对光学质量影响的研究。方法：采用波前传感器进行序列高阶像差（HOA）测量。在测量过程中，受试者被要求每10秒眨眼一次。得到的像差数据在中心4mm直径范围内分析了6阶Zemike多项式的彗形、球形和总hoa。结果：对健康眼的hoa进行了系列测量。即使在临床正常的受试者中也有变化，按模式分为稳定、小波动、锯齿形和其他4组。我们定量评估了一名干眼症患者在点状眼塞插入后hoa的连续眨后变化，该患者主诉干眼症改善后出现了异于性的视觉障碍。结论：波前传感是一种有用的客观方法，可用于评价与泪膜动力学相关的视觉性能的顺序变化。连续测量hoa可显示泪液动力学与临床视力质量之间的关系。
Purpose: To summarize our previous studies regarding the influence of tear-film dynamics on optical quality after blinking.Methods: Sequential higher-order aberration (HOA) measurements were performed by using a wavefront sensor. During the measurements, subjects were asked to blink every 10 seconds. The obtained aberration data were analyzed in the central 4-mm diameter for coma-like, spherical-like, and total HOAs up to the sixth-order Zemike polynomials.Results: Serial measurements of HOAs in healthy eyes. showed variations even in clinically normal subjects and were classified into 4 groups by pattern: stable, small-fluctuation, sawtooth, and others. The sequential postblink change in HOAs after punctal plug insertion was quantitatively evaluated in a patient with dry eye who complained of paradoxical visual impairment with epiphora despite improvement of dry eye.Conclusions: Wavefront sensing is a useful objective method to evaluate sequential changes of visual performance related to tear-film dynamics. Serial measurement of HOAs might show a relationship between tear dynamics and quality of vision clinically.