石原氏色盲检测图是一种检测色觉障碍的方法，得名于它的发明者，日本东京大学教授石原忍。石原氏最早的检测图发表于1917年。

这种测试图包括一系列彩色圆盘，称为“石原盘”，每个圆盘内布满多种颜色和大小的圆点。其中一部分圆点以色盲者不易区分的颜色组成一个或几个数字。色觉正常者能够很容易分辨出这些数字，而色盲患者则无法或很难分辨。全套的石原氏检测图包括38个色盘，通常在仅使用前几个色盘就能够检测出色觉障碍，对前24个色盘进行全部测试后能够对色觉缺陷的程度作出更准确的诊断。

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The Ishihara test is a color pe****tion test for red-green color deficiencies. It was named after its designer, Dr. Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917.

The test consists of a number of colored plates, called Ishihara plates, each of which contains a circle of dots appearing randomized in color and size. Within the pattern are dots which form a number or shape clearly visible to those with normal color vision, and invisible, or difficult to see, to those with a red-green color vision defect, or the other way around. The full test consists of 38 plates, but the existence of a deficiency is usually clear after a few plates. There is also the smaller test consisting only 24 plates.