Ishihara Chart - Page 2
What is Ishihara chart?
The Ishihara chart, named after its creator Dr. Shinobu Ishihara, is a color perception test used to assess if a person has color vision deficiency, commonly known as color blindness. It consists of a series of plates with colored dots arranged in patterns and numbers hidden within them. By identifying the numbers, individuals with normal color vision can pass the test with ease, while those with color vision deficiency may struggle to see or correctly identify the numbers.
What are the types of Ishihara chart?
There are several types of Ishihara charts used for color vision testing. The most commonly known version is the Ishihara Color Test, which contains plates with dots in different colors and numbers. Another type is the Ishihara-Hardy Rand Rittler (IHRR) test, which uses plates with colored dots arranged in specific patterns. Additionally, there are specialized Ishihara charts designed for specific purposes, such as assessing color vision in children or testing for specific types of color deficiencies.
How to complete Ishihara chart
Completing the Ishihara chart involves carefully examining each plate and correctly identifying the numbers hidden within the dots. Here are some steps to help you complete the test:
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