Ocular prevalence versus ocular dominance
Ocular prevalence versus ocular dominance
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DOI：
10.1016/s0042-6989(03)00121-4
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发表时间：
2003-06-01
期刊：
影响因子：
1.8
通讯作者：
Bach, M
中科院分区：
文献类型：
--
作者：
Kommerell, G;Schmitt, C;Bach, M
眼睛优势表现在包含视差超出帕努姆区域的立体物体的测试中，例如在用手指指着。这些测试迫使受试者决定选择一只眼睛还是另一只眼睛。相比之下，眼部患病率是通过在 Panum 区域内成像的立体目标来确定的。这些测试可以对眼睛之间的平衡进行分级量化。在这里，我们提出了基于计算机的弗莱堡眼部患病率测试，其中立体不同的目标必须对齐，并将其与哈斯立体平衡测试进行比较，哈斯立体平衡测试需要估计静止的立体不同物体之间的水平距离。此外，我们还比较了眼部患病率和眼部优势。方法：（1）我们测量了一只眼睛前面的中性灰色滤光片的影响，以评估弗莱堡和哈斯测试在揭示眼部患病率分级量方面的适用性。 (2) 大约 20 名两只眼睛视力相等的受试者接受了弗莱堡和哈斯眼部患病率测试以及帕森单视镜测试以了解眼部优势。结果：(1) 在弗莱堡和哈斯测试中，中性灰滤光片使眼部患病率降低了约 50%。 (2) 使用 Freiburg 测试的 20 名受试者中，有 13 名受试者的眼部患病率超过 10%，使用哈斯测试的 14 名受试者中，眼部患病率超过 10%。平均而言，弗莱堡测试中的眼部患病率为 24.1 +/- 3.8%，哈斯测试中的眼部患病率为 32.0 +/- 8.2%。 20 名受试者中有 15 名的主视眼与主视眼一致。讨论：中性灰色滤光片的效果表明弗莱堡测试和哈斯测试都可以用于测量眼部患病率的分数，尽管弗莱堡测试具有更高的再现性。自发性眼病常见于两只眼睛视力相同的人。这表明眼部患病率并不代表需要治疗的病症。相反，对一只眼睛的部分抑制（与眼部患病率相关）可能会发挥生理作用，因为它有助于忽略接近帕努姆区域极限的立体视差的重影。 (C) 2003 Elsevier Science Ltd. 保留所有权利。
Ocular dominance manifests itself in tests that contain stereo-objects with a disparity beyond Panum's area, e.g. in pointing a finger. These tests force subjects to decide in favour of one or the other eye. In contrast, ocular prevalence is determined using stereo-targets imaged within Panum's areas. These tests allow a graded quantification of the balance between the eyes. Here we present the computer-based Freiburg Ocular Prevalence Test in which stereo-disparate targets have to be aligned, and compare it with the Haase Stereo-balance Test that requires an estimation of the horizontal distance between stationary stereo-disparate objects. In addition, we compare ocular prevalence with ocular dominance. Methods: (1) We measured the influence of a neutral-grey filter in front of one eye to assess the suitability of the Freiburg and the Haase Tests in revealing graded amounts of ocular prevalence. (2) About 20 subjects with equal vision of their two eyes underwent the Freiburg and the Haase Tests for ocular prevalence, and Parson's Monoptoscope Test for ocular dominance. Results: (1) In both the Freiburg and the Haase Tests, the neutral-grey filter shifted ocular prevalence by about 50%. (2) An ocular prevalence of more than 10% occurred in 13 of the 20 subjects using the Freiburg, and in 14 using the Haase Test. On average, the ocular prevalence was 24.1 +/- 3.8% in the Freiburg and 32.0 +/- 8.2% in the Haase Test. The dominant eye coincided with the prevalent eye in 15 of the 20 subjects. Discussion: The effect of the neutral-grey filter indicated that both the Freiburg and the Haase Tests can be used to measure fractions of ocular prevalence, although the Freiburg Test carries a higher reproducibility. Spontaneous ocular prevalence occurs frequently in persons with equal vision of their two eyes. This suggests that ocular prevalence does not represent a condition that requires treatment. Rather, partial suppression of one eye, the correlate of ocular prevalence, may play a physiological role in that it helps to disregard double images at stereo-disparities close to the limits of Panum's area. (C) 2003 Elsevier Science Ltd. All rights reserved.