Single flash electroretinograms of mature cataractous and fellow eyes
Single flash electroretinograms of mature cataractous and fellow eyes
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DOI：
10.2147/opth.s118677
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发表时间：
2016-01-01
影响因子：
2.2
通讯作者：
Uda, Shigekazu
中科院分区：
文献类型：
--
作者：
Yamauchi, Yasuyuki;Mochizuki, Jun-ichi;Uda, Shigekazu
背景资料：一般认为，包括老年性白内障在内的眼介质混浊对视网膜的电反应几乎没有影响。方法：对105例老年性白内障患者的10 0 0视力< 0.1的成熟性白内障眼和10 0视力> 0.5的对眼进行单闪光视网膜电图（ERG）比较。白内障眼ERG a波的平均振幅和隐式时间分别为323.6 +/- 95.8 μ V和14.7 +/- 3.5 ms，对侧眼为352.3 +/- 96.6 μ V和12.0 +/- 1.5 ms。白内障眼ERG b波的平均振幅和隐式时间分别为390.1 +/- 108.7 μ V和63.4 +/- 27.9 ms，对侧眼为415.3 +/- 119.1 μ V和59.0 +/- 9.3 ms。白内障眼的a波和b波的平均振幅显著低于对侧眼，a波和b波的平均隐式时间显著长于对侧眼。结论：成熟期白内障虽影响单闪光ERG，但术后视力良好。单闪光视网膜电图并不总是反映中心凹功能和视觉通路，但它仍然是一个可靠的指导评估视力预后白内障手术前。
Background: It is generally stated that opacities of the ocular media, including senile cataract, have little effect on the electrical responses of the retina. However, lower amplitudes and longer implicit times are sometimes observed in electroretinograms ( ERGs) of patients with mature cataract.Methods: Single flash ERGs of mature cataractous eyes with decimal visual acuity less than 0.1 were compared with those of the fellow eyes with decimal visual acuity better than 0.5, in 105 senile cataract patients.Results: The mean amplitudes and implicit times of ERG a-waves were, respectively, 323.6 +/- 95.8 mu V and 14.7 +/- 3.5 ms in the cataractous eyes and 352.3 +/- 96.6 mu V and 12.0 +/- 1.5 ms in the fellow eyes. The mean amplitudes and implicit times of ERG b-waves were, respectively, 390.1 +/- 108.7 mu V and 63.4 +/- 27.9 ms in the cataractous eyes and 415.3 +/- 119.1 mu V and 59.0 +/- 9.3 ms in the fellow eyes. The mean amplitudes of the a-and b-waves were significantly lower and the mean implicit times of the a-and b-wave were significantly longer in the cataractous eyes as compared to those of the fellow eyes. Postoperative visual acuity was similar in cataractous and fellow eyes.Conclusion: Even though single flash ERG was influenced due to mature cataract, eyes revealed good postoperative visual acuity. Single flash ERG does not always reflect the foveal function and the visual pathway; nevertheless, it remains a reliable guide to evaluate visual prognosis before cataract surgery.