Ishihara test

The Ishihara test is a method used to detect color blindness, specifically issues with distinguishing certain colors, particularly reds and greens. It involves viewing a series of plates with many colored dots that form numbers or patterns. People with normal color vision can see these patterns clearly, while those with color vision deficiencies may see only a jumble of dots or different numbers. The test helps identify if someone has a color vision deficiency and the type or severity of it, assisting in diagnosis and understanding of visual capabilities.