Wakayama A, Matsumoto C, Iwagaki A, Matsumoto F, Ohmure K, Shimomura Y
Department of Ophthalmology, Kinki University School of Medicine, 377-2 Ohno-higashi, Osaka-Sayama 589-8511, Japan.
Nippon Ganka Gakkai Zasshi. 2001 Feb;105(2):111-8.
To study the influence of stimulus sizes on binocular summation using the modified Octopus 201 combined with a space synoptophore.
Four normal subjects, aged 21 to 26 were tested. Using the SARGON program, we designed a new program to test 37 points in the central 6 degrees visual field. Sensitivity of the central 6 degrees visual field under monocular and binocular conditions was measured while the fusion patterns were displayed on the space synoptophore. The visual fields were measured at stimulus sizes 1, 3, and 5.
The visual sensitivity under binocular conditions was higher than under monocular conditions for all the stimulus sizes. Binocular summation for stimulus size 1 was present in a flat form, for stimulus size 3 in a convex form, and for stimulus size 5 in a concave form in the central 6 degrees visual field.
Binocular summation differed in stimulus size and retinal eccentricity. Binocular summation for stimulus size 3 increased in the fovea and it increased for stimulus size 5 in the peripheral area in the central 6 degrees visual field.
使用改良的Octopus 201联合空间同视机研究刺激大小对双眼总和的影响。
对4名年龄在21至26岁的正常受试者进行测试。使用SARGON程序，我们设计了一个新程序来测试中央6度视野中的37个点。在空间同视机上显示融合模式时，测量单眼和双眼条件下中央6度视野的敏感度。在刺激大小为1、3和5时测量视野。
在所有刺激大小下，双眼条件下的视觉敏感度均高于单眼条件。在中央6度视野中，刺激大小为1时双眼总和呈平坦形式，刺激大小为3时呈凸形，刺激大小为5时呈凹形。
双眼总和在刺激大小和视网膜偏心度方面存在差异。在中央6度视野中，刺激大小为3时的双眼总和在中央凹处增加，刺激大小为5时在周边区域增加。
